'Seal' in the Bible

I live -- an affirmation of Jehovah, Though Coniah son of Jehoiakim king of Judah Were a seal on My right hand, Surely thence I draw thee away,

And I write in a book, and seal, and cause witnesses to testify, and weigh the silver in balances;

Men shall buy fields for money, and subscribe evidences, and seal them, and take witnesses in the land of Benjamin, and in the places about Jerusalem, and in the cities of Judah, and in the cities of the mountains, and in the cities of the valley, and in the cities of the south: for I will cause their captivity to return, saith the LORD.