'Seals' in the Bible

he who commands the sun and it does not shine and seals up the stars;

Then I saw in the right hand of the one who was seated on the throne a scroll written on the front and back and sealed with seven seals.

And I saw a powerful angel proclaiming in a loud voice: "Who is worthy to open the scroll and to break its seals?"

Then one of the elders said to me, "Stop weeping! Look, the Lion of the tribe of Judah, the root of David, has conquered; thus he can open the scroll and its seven seals."

They were singing a new song: "You are worthy to take the scroll and to open its seals because you were killed, and at the cost of your own blood you have purchased for God persons from every tribe, language, people, and nation.

I looked on when the Lamb opened one of the seven seals, and I heard one of the four living creatures saying with a thunderous voice, "Come!"