"truly" (akin to aletheia, "truth"), is translated "verily" in 1Jo 2:5. See INDEED, No. 3, SURELY, TRULY.
<2,,281, amen>
the transliteration of a Heb. word = "truth," is usually translated "verily" in the four Gospels; in John's Gospel the Lord introduces a solemn pronouncement by the repeated word "verily, verily" twenty-five times. See AMEN.
<3,,3689, ontos>
"really" (connected with eimi, "to be"), is rendered "verily" in Mar 11:32, RV, and Gal 3:21. See INDEED, No. 4.
Notes: (1) In Act 16:37, gar, "for," is translated "verily." (2) In Heb 2:16, depou (in some texts de pou), a particle meaning "of course, we know," is rendered "verily." (3) In Luk 11:51, AV, nai, "yea" (RV), is translated "verily." (4) The particle men (see INDEED, No. 1) is rendered "verily," e.g., in 1Co 5:3, 1Co 14:17, Heb 12:10; in the AV, Heb 3:5, Heb 7:5, Heb 7:18, 1Pe 1:20; in Act 26:9 it is combined with oun ("therefore"): see YEA, No. 4.
