Revelation 3:12

3:12 The one who conquers I will make a pillar in the temple of my God, and he will never depart from it. I will write on him the name of my God and the name of the city of my God (the new Jerusalem that comes down out of heaven from my God), and my new name as well.

Revelation 7:3

7:3 “Do not damage the earth or the sea or the trees until we have put a seal on the foreheads of the servants of our God.”

Revelation 13:16-17

13:16 He also caused everyone (small and great, rich and poor, free and slave) to obtain a mark on their right hand or on their forehead. 13:17 Thus no one was allowed to buy or sell things unless he bore the mark of the beast – that is, his name or his number.

Luke 12:8

12:8 “I tell you, whoever acknowledges me before men, the Son of Man will also acknowledge before God’s angels.