Howbeit (μεντο). Strong adversative, "however."

Firm (στερεος). Old adjective, solid, compact, in N.T. only here, 1. Peter 5:9; Hebrews 5:12; Hebrews 5:14. See στερεωμα in Colossians 2:5. For θεμελιος see 1. Corinthians 3:11; Romans 15:20; 1. Timothy 6:19. Cf. εδραιωμα in 1. Timothy 3:15.

Seal (σφραγις). See 1. Corinthians 9:2; Romans 4:11.

Knoweth (εγνω). Timeless aorist active indicative of γινωσκω. Quotation from Numbers 16:5.

Let every one depart (αποστητω πας). Paraphrase of Numbers 16:27; Isaiah 26:13; Isaiah 52:11; Jeremiah 20:9. Second aorist active imperative of αφιστημ (intransitive use), "Let every one stand off from." Probably another echo of the rebellion of Korah.