What Is Devotion?

…bhakti in its fullness is nothing but an entire self-giving. But then all meditation, all tapasya, all means of prayer or mantra must have that as its end…
[SABCL, 23:799]

Devotion Is a State of the Heart and Soul

Bhakti is not an experience, it is a state of the heart and soul. It is a state which comes when the psychic being is awake and prominent.
[SABCL, 23:776]
…Worship is only the first step on the path of devotion. Where external worship changes into the inner adoration, real Bhakti begins; that deepens into the intensity of divine love; that love leads to the joy of closeness in our relations with the Divine; the joy of closeness passes into the bliss of union.
[SABCL, 21:525]

Devotion without Gratitude Is Incomplete

…there is another movement which should constantly accompany devotion. … That kind of sense of gratitude that the Divine exists; that feeling of a marvelling thankfulness which truly fills you with a sublime joy at the fact that the Divine exists, that there is something in the universe which is the Divine, that it is not just the monstrosity we see, that there is the Divine, the Divine exists. And each time that the least thing puts you either directly or indirectly in contactwith this sublime Reality of divine existence, the heart is filled with so intense, so marvellous a joy, such a gratitude as of all things has the most delightful taste.
 There is nothing which gives you a joy equal to that of gratitude. One hears a bird sing, sees a lovely flower, looks at a little child, observes an act of generosity, reads a beautiful sentence, looks at the setting sun, no matter what, suddenly this comes upon you, this kind of emotion—indeed so deep, so intense—that the world manifests the Divine, that there is something behind the world which is the Divine.
So I find that devotion without gratitude is quite incomplete, gratitude must come with devotion.
[CWM2, 8:40]

How to Get Pure and Complete Devotion?

Get quiet first?then from the quietude aspire and open yourself quietly and sincerely to the Mother.
Love come to us un many ways; it may come as an awakening to the beauty of the Lover, by the sight of an ideal face and image of him, by his mysterious hints to us of himself behind the thousand faces of things in the world, by a slow or sudden need of the heart, by a vague thirst in the soul, by the sense of someone near us drawing us or pursuing us with love or of someone blissful and beautiful whom we must discover.
We may seek after him passionately and pursue the unseen beloved; but also the lover whom we think not of, may pursue  us, may come upon us in the midst of the world and seize on us for his own whether at first we will or no. Even, he may come to us at first as an enemy, with the wrath of love, and our earliest relations with him may be those of battle and struggle. Where first there is love and attraction, the relations between the Divine and the soul may still for long be chequered with misunderstanding and offence, jealousy and wrath, strife and the quarrels of love, hope and despair and the pain of absence and separation. We throw up all the passions of the heart against him, till they are purified into a sole ecstasy of bliss and oneness. But that too is no monotony; it is not possible for the tongue of human speech to tell all the utter unity and all the eternal variety of the Ananda of divine love. Our higher and our lower members are both flooded with it, the mind and life no less than the soul: even the physical body takes its share of the joy, feels the touch, is filled in all its limbs, veins, nerves with the flowing of the wine of the ecstasy, amrta.
[SABCL, 21:578]
…very few people, very few, an insignificant number, go to church or temple with a true religious feeling, that is, not to pray and beg for something from God but to offer themselves, give thanks, aspire, give themselves. There is hardly one in a million who does that.
[CWM2, 6:19495]

Mutual Misunderstanding between the Followers of the Three Paths:

Is the Way of Bhakti Inferior?

Since … in the union of these three powers lies our base of perfection, the seeker of an integral self-fulfilment in the Divine must avoid or throw away, if he has them at all, the misunderstanding and mutual depreciation which we often find existent between the followers of the three paths. Those who have the cult of knowledge seem often, if not to despise, yet to look downward from their dizzy eminence on the path of the devotee as if it were a thing inferior, ignorant, good only for souls that are not yet ready for the heights of the Truth. It is true that devotion without knowledge is often a thing raw, crude, blind and dangerous, as the errors, crimes, follies of the religious have too often shown. But this is because devotion in them has not found its own path, its own real principle, has not therefore really entered on the path, but is fumbling and feeling after it, is on one of the bypaths that lead to it; and knowledge too at this stage is as imperfect as devotion,dogmatic, schismatic, intolerant, bound up in the narrowness of some single and exclusive principle, even that being usually very imperfectly seized. When the devotee has grasped the power that shall raise him, has really laid hold on love, that in the end purifies and enlarges him as effectively as knowledge can; they are equal powers, though their methods of arriving at the same goal are different. The pride of the philosopher looking down on the passion of the devotee arises, as does all pride, from a certain deficiency of his nature; for the intellect too exclusively developed misses what the heart has to offer. The intellect is not in every way superior to the heart; if it opens more readily doors at which the heart is apt to fumble in vain, it is, itself, apt to miss truths which to the heart are very near and easy to hold. And if when the way of thought deepens into spiritual experience, it arrives readily at the etherial heights, pinnacles, skyey widenesses, it cannot without the aid of the heart fathom the intense and rich abysses and oceanic depths of the divine being and the divine Ananda.
The way of Bhakti is supposed often to be necessarily inferior because it proceeds by worship which belongs to that stage of spiritual experience where there is a difference, an insufficient unity between the human soul and the Divine, because its very principle is love and love means always two, the lover and the beloved, a dualism therefore, while oneness is the highest spiritual experience, and because it seeks after the personal God while the Impersonal is the highest and the eternal truth, if not even the sole Reality. But worship is only the first step on the path of devotion. Where external worship changes into the inner adoration, real Bhakti begins; that deepens into the intensity of divine love; that love leads to the joy of closeness in our relations with the Divine; the joy of closeness passes into the bliss of union. Love too as well as knowledge brings us to a highest oneness and it gives to that oneness its greatest possible depth and intensity. It is true that love returns gladly upon a difference in oneness, by which the oneness itself becomes richer and sweeter. But here we may say that the heart is wiser than the thought, at least than that thought which fixes upon opposite ideas of the Divine and concentrates on one to the exclusion of the other which seems its contrary, but is really its complement and a means of its greatest fulfilment. This is the weakness of the mind that it limits itself by its thoughts, its positive and negative ideas, the aspects of the Divine Reality that it sees, and tends too much to pit one against the other.
Thought in the mind, vicara, the philosophic trend by which mental knowledge approaches the Divine, is apt to lend a greater importance to the abstract over the concrete, to that which is high and remote over that which is intimate and near. It finds a greater truth in the delight of the One in itself, a lesser truth or even a falsehood in the delight of the One in the Many and of the Many in the One, a greater truth in the impersonal and the Nirguna, a lesser truth or a falsehood in the personal and the Saguna. But the Divine is beyond our oppositions of ideas, beyond the logical contradictions we make between his aspects. He is not, we have seen, bound and restricted by exclusive unity; his oneness realises itself in infinite variation and to the joy of that love has the completest key, without therefore missing the joy of the unity. The highest knowledge and highest spiritual experience by knowledge find his oneness as perfect in his various relations with the Many as in his self-absorbed delight. If to thought the Impersonal seems the wider and higher truth, the Personal a narrower experience, the spirit finds both of them to be aspects of a Reality which figures itself in both, and if there is a knowledge of that Reality to which thought arrives by insistence on the infinite Impersonality, there is also a knowledge of it to which love arrives by insistence on the infinite Personality. The spiritual experience of each leads, if followed to the end, to the same ultimate Truth. By Bhakti as by knowledge, as the Gita tells us, we arrive at unity with the Purushottama, the Supreme who contains in himself the impersonal and numberless personalities, the qualityless and infinite qualities, pure being, consciousness and delight and the endless play of their relations.
The devotee on the other hand tends to look down on the sawdust dryness of mere knowledge. And it is true that philosophy by itself without the rapture of spiritual experience is something as dry as it is clear and cannot give all the satisfaction we seek, that its spiritual experience even, when it has not left its supports of thought and shot up beyond the mind, lives too much in an abstract delight and that what it reaches, is not indeed the void it seems to the passion of the heart, but still has the limitations of the peaks. On the other hand, love itself is not complete without knowledge. The Gita distinguishes between three initial kinds of Bhakti, that which seeks refuge in the Divine from the sorrows of the world, arta, that which, desiring, approaches the Divine as the giver of its good, artharthi, and that which attracted by what it already loves, but does not yet know, yearns to know this divine Unknown, jijñasu; but it gives the palm to the Bhakti that knows. Evidently the intensity of passion which says, “I do not understand, I love,” and, loving, cares not to understand, is not love’s last self-expression, but its first, nor is it its highest intensity. Rather as knowledge of the Divine grows, delight in the Divine and love of it must increase. Nor can mere rapture be secure without the foundation of knowledge; to live in what we love, gives that security, and to live in it means to be one with it in consciousness, and oneness of consciousness is the perfect condition of knowledge. Knowledge of the Divine gives to love of the Divine its firmest security, opens to it its own widest joy of experience, raises it to its highest pinnacles of outlook.
If the mutual misunderstandings of these two powers are an ignorance, no less so is the tendency of both to look down on the way of works as inferior to their own loftier pitch of spiritual achievement. There is an intensity of love, as there is an intensity of knowledge, to which works seem something outward and distracting. But works are only thus outward and distracting when we have not found oneness of will and consciousness with the Supreme. When once that is found, works become the very power of knowledge and the very outpouring of love. If knowledge is the very state of oneness and love its bliss, divine works are the living power of its light and sweetness. There is a movement of love, as in the aspiration of human love, to separate the lover and the loved in the enjoyment of their exclusive oneness away from the world and from all others, shut up in the nuptial chambers of the heart. That is perhaps an inevitable movement of this path. But still the widest love fulfilled in knowledge sees the world not as something other and hostile to this joy, but as the being of the Beloved and all creatures as his being, and in that vision divine works find their joy and their justification.
[SABCL, 21:52327]