My God, my Portion and my Love. J. Watts. [God Man’s only Happiness.] Published in the first ed.ition of his Hymns and Spiritual Songs, 1707 (ed. 1709, Book ii., No. 94), in 8 stanzas of 41ines, and headed "God my only Happiness." It is in common use both in full and in an abridged form. In Dale's English Hymn Book, 1874, No. 639, "My God, my life is in Thy love," is also from this hymn, and is composed of stanzas i., ii., v., vii., viii. slightly altered.
--John Julian, Dictionary of Hymnology (1907)