Thank you N & V.
"Cast upon this poor and desolate creature, O my Lord, the glance of Thy wealth, and flood his heart with the beams of Thy knowledge, that he may apprehend the verities of the unseen world, and discover the mysteries of Thy heavenly realm, and perceive the signs and tokens of Thy kingdom, and behold the manifold revelations of this earthly life all set forth before the face of Him Who is the Revealer of Thine own Self. Direct, then, his eyes, O my God, towards the horizon of Thy loving-kindness, and make steadfast his heart in its attachment to Thee, and unloose his tongue to praise Thee, and make him able to hold fast the cord of Thy love, and to cling to the hem of Thy bounteousness, and to proclaim Thy name amidst Thy creatures...
Hold Thou the hand of this seeker who hath set his face towards Thee, O my Lord, and draw him out of the depths of his vain imaginations, that the light of certainty may shine brightly above the horizon of his heart..." -Bahá'u'lláh,
Prayers and Meditations
I love the mystical nature of this prayer, particularly the image of the heart being flooded with the light of divine knowledge (a useful image for centering in prayer and meditation).