O.E., from L.L. amen, from Gk. amen, from Heb., "truth," used adverbially as an expression of agreement (e.g. Deut. xxvii.26, I Kings i.36; cf. Mod.Eng. verily, surely, absolutely in the same sense), from Sem. root a-m-n "to be trustworthy, confirm, support." Used in O.E. only at the end of Gospels, otherwise translated as Sošlic! or Swa hit ys, or Sy! As an expression of concurrence after prayers, it is recorded from early 13c.