אָמֵן (ʾāmēn) is
a Hebrew adverb
meaning verily. It appears
30 times
in 8 books of the Hebrew Bible
(Strong's H543).
Also rendered
amen
Same Hebrew root (TWOT 116b)
Root family 116: אָמַןʾāman — to confirm, support, uphold (Qal); to be established, be faithful (Niphal); to be certain, i.e. to believe in (Hiphil). ASV, RSV usually the same. One notable exception is Gen 15:6 where RSV has “believed,” while ASV has “believed in.”)