Bible verses about Seals
(From Torrey's Topical Textbook)

Called signet Genesis 38:18,25 Precious stones set in gold used as Exodus 28:11 Inscriptions upon, alluded to II Timothy 2:19 Generally worn as rings or bracelets Jeremiah 22:24 IMPRESSIONS OF Frequently taken in clay Job 38:14 Used for security Daniel 6:17; Matthew 27:66 Attached to all royal decrees I Kings 21:8; Esther 3:12; 8:8 Attached to covenants Nehemiah 9:38; 10:1 Attached to lease and transfers of property Jeremiah 32:9-12,44 Set upon treasures Deuteronomy 32:34 Attached to the victims approved for sacrifice, alluded to John 6:27 Were given by kings as a badge of authority Genesis 41:41,42 Illustrative of Circumcision Romans 4:11 Converts I Corinthians 9:2 What is dear or valued Solomon 8:6; Jeremiah 22:24; Haggai 2:23 Secrecy Daniel 12:4; Revelation 5:1; 10:4 Security Solomon 4:12; II Timothy 2:19; Revelation 7:2-8; 20:3 Full approval John 3:33 Appropriation of saints to God by the Spirit II Corinthians 1:22; Ephesians 1:13; 4:30 Restraint Job 9:7; 37:7; Revelation 20:3