Compare 1 Enoch 105:2 and 4 Ezra 14:9

"... g. The Messiah. 1 Enoch 105:2: “I and my son (= Messiah) will be united with them always on the ways of truth during their life. You will have peace; rejoice, children of the truth.” ‖ 4 Ezra 7:28 following: “For my son the Christ (filius meus Messiah), will be revealed with all who are with him and he will give to all who remain peace for 400 years. After these years my son, the Christ, will die along with all who have human breath.” (The textual tradition is not unified; other manuscripts have, instead of “filius meus Messiah,” just “Messiah meus” or “Messiah” or “Messiah dei.”) — 4 Ezra 14:9: “But you (Ezra) are to be removed from men and from now on you will dwell with my son (cum filio meo) and his companions until the times are up.” (These passages do not have in view a preexistent Messiah; see § John 1:1 A, A, n. c.) — Everywhere in these passages the expression “my son” in God’s mouth is a designation for the Messiah, synonymous with Christos or mashiach. ..."