I am the LORD, and there is no other; apart from me there is no God. I will strengthen you, though you have not acknowledged me, so that from the rising of the sun to the place of its setting people may know there is none besides me. I am the LORD, and there is no other (Isaiah 45:5-6).
We will boast in the God of Israel. He is the one true God, and there is no other. He summons each one of us by name, even though we do not acknowledge Him. He shows mercy to whomever He wishes, and extends His grace to whomever He desires. Woe to anyone who quarrels with Him. He is the only one who can save His people, and He will put to shame and disgrace every false idol set against Him.
We will rejoice in the God of Israel, for out of Him Jesus of Nazareth, Our Messiah, is revealed. Turn to Him and be saved. Every knee will bow, and every tongue will swear, that He alone is LORD. He is our deliverer and our strength, and we will boast in Him, and in Him alone.