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 22:16

22:16 “I, Jesus, have sent my angel to testify to you about these things for the churches. I am the root and the descendant of David, the bright morning star!”