'Seals' in the Bible

"Because of all this, we are making a binding agreement, putting it in writing, and our leaders, our descendants of Levi, and our priests hereby set their seals upon it."

He commands the sun so that it doesn't shine and seals up the stars.

Then I saw in the right hand of the one who sits on the throne a scroll written on the inside and on the outside, sealed with seven seals.

I also saw a powerful angel proclaiming with a loud voice, "Who is worthy to open the scroll and break its seals?"

"Stop crying," one of the elders told me. "Look! The Lion from the tribe of Judah, the Root of David, has conquered. He can open the scroll and its seven seals."

They sang a new song: "You are worthy to take the scroll and open its seals, because you were slaughtered. With your blood you purchased people for God from every tribe, language, people, and nation.

Then I saw the lamb open the first of the seven seals. I heard one of the four living creatures say with a voice like thunder, "Go!"