Revelation 1:8

1:8 “I am the Alpha and the Omega,” says the Lord God – the one who is, and who was, and who is still to come – the All-Powerful!

Revelation 11:17

11:17 with these words:

“We give you thanks, Lord God, the All-Powerful,

the one who is and who was,

because you have taken your great power

and begun to reign.