Jeremiah 50:18

¹⁸ Therefore thus saith the LORD of hosts, the God of Israel; Behold, I will punish the king of Babylon and his land, as I have punished the king of Assyria.

Lamentations 3:58

⁵⁸ O Lord, thou hast pleaded the causes of my soul; thou hast redeemed my life.

'The first and the last' signifies that the Lord is the only God.