Isaiah 43:10; Isaiah 44:6

10 "You are My witnesses," says the Lord, "And My servant whom I have chosen, That you may know and believe Me, And understand that I am He. Before Me there was no God formed, Nor shall there be after Me.

6 "Thus says the Lord, the King of Israel, And his Redeemer, the Lord of hosts: 'I am the First and I am the Last; Besides Me there is no God.