"Long Ago, Prophets Knew", also called "Long Ago, Prophets Knew, Christ would come born a Jew", is an English Christian Advent carol written by Reverend Fred Pratt Green[1] in 1970.

[2] "Long Ago, Prophets Knew" was written by Methodist minister Fred Pratt Green in 1970 at the behest of John Wilson.

[3] In 1986, when The New English Hymnal was being compiled with hymns appropriate for Eucharist services being prioritised, "Long Ago, Prophets Knew" was included at the behest of the former Archdeacon of Hackney, George Timms, in order to fill required spaces in the hymnal for feast days and promote newer hymns.

[5][6] Baptists use the carol in connection with Bible readings from 2 Samuel:7 and Romans 16:17-25.

"[9] The carol was an example of a modern hymn that utilised an older style of including a repetitive monosyllable in the chorus.