Bible verses about Seal
(From Nave's Topical Bible)

-1. A stamp used for signifying documents .Given as a pledge Genesis 38:18 .Engraved Exodus 28:11, 39:6, 21, 36; 14, 30; II Timothy 2:19 .Decrees signified by I Kings 21:8; Esther 8:8 .Documents sealed with .Ahab's letter I Kings 21:8 .Covenants Nehemiah 9:38; 10:1; Isaiah 8:16 .Decrees Esther 8:8; Daniel 6:9 .Deeds Jeremiah 32:10 .Treasures secured by Deuteronomy 32:34 .Lion's den secured by Daniel 6:17 .The gravesite of Jesus Matthew 27:66 .Circumcision was regarded as a seal of righteousness Romans 4:11 -FIGURATIVE .Of secrecy Daniel 12:9; Revelation 5:1 .Of certainty of divine approval John 6:27; Romans 15:28; II Corinthians 1:22; Ephesians 1:13; 4:30; Revelation 7:3, 4 -2. An amphibious animal .Skins of, according to the Revised Version, were used as a covering of the tabernacle Exodus 25:5; 26:14; 35:7, 23; 36:19; 39:34; Numbers 4:25