4 Maccabees 18:24
20 O bitter was that day—and yet not bitter—when that bitter tyrant of the Greeks quenched fire with fire in his cruel caldrons, and in his burning rage brought those seven sons of the daughter of Abraham to the catapult and back again to more tortures, 21 pierced the pupils of their eyes and cut out their tongues, and put them to death with various tortures. 22 For these crimes divine justice pursued and will pursue the accursed tyrant. 23 But the sons of Abraham with their victorious mother are gathered together into the chorus of the fathers, and have received pure and immortal souls from God, 24 to whom be glory forever and ever. Amen.
Galatians 1:5
1 From Paul, an apostle (not from men, nor by human agency, but by Jesus Christ and God the Father who raised him from the dead) 2 and all the brothers with me, to the churches of Galatia. 3 Grace and peace to you from God the Father and our Lord Jesus Christ, 4 who gave himself for our sins to rescue us from this present evil age according to the will of our God and Father, 5 to whom be glory forever and ever! Amen.
Notes and References
"... Paul’s final word is adelphoi, brothers and sisters. Despite the rebukes, Paul’s affection for them, reaffirmed throughout the letter by this Greek title (Galatians 1:11; 3:15; 4:12, 28, 31; 5:11, 13; 6:1), sounds the letter’s concluding note. Jewish books sometimes closed with “Amen.” (Whether this was added by the author or, more often, by an editor. See, e.g., 3 Maccabees 7:23; 4 Maccabees 18:24; 3 Baruch 17:4; the ends of books of psalms, Psalm 41:13; 72:19; 89:52; 106:48) Some New Testament letters closed this way, but especially when they were closing with blessings (Romans 16:27; Jude 25; variant in Revelation 22:21); “Amen” was, of course, a good way to close a blessing (Rom 1:25; 9:5; 11:36; 15:33; Galatians 1:5), as here (Galatians 6:18) ..."
Keener, Craig S. Galatians (p. 294) Cambridge University Press, 2018