Revelation 5:2

5:2 And I saw a powerful angel proclaiming in a loud voice: “Who is worthy to open the scroll and to break its seals?”

Revelation 5:5

5:5 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.”

Revelation 5:9

5:9 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.