O Son of Man, Thyself once [crossed] crost. [St. Stephen's Day.] This hymn was given in the Rev. J. F. Thrupp's Psalms & Hymns for Public Worship, 1853, No. 120, in 4 stanzas of 4 lines. In his Index of first lines Mr. Thrupp says that it was "rewritten," but does not give the source of the original. That original is evidently Mrs. C. F. Alexander’s hymn for St. Stephen's Day, "Have you not seen the lily ride," which appeared in her Verses for Holy Seasons, 1846, p. 11, in 10 stanzas of 4 lines; the stanzas chosen being viii., iv., v., ix., x. Thrupp's form of the hymn underwent another change when included in the Society for Promoting Christian Knowledge Church Hymns, 1871, as "O Son of Man, Thyself once crossed,” when the compilers added their stanza ii., "O Son of God, Whose glory cast," and altered Thrupp's stanzas iv, and v. This text of 1871 is also in Thring's Collection, 1882.
--John Julian, Dictionary of Hymnology (1907)