Isaiah 45:14 prophesies foreigners confessing 'there is no other god'—a direct fulfillment of the universal declaration in v.6.

Isaiah 37:20 echoes the same purpose: 'that all kingdoms may know you alone are the LORD.'

In Isaiah 49:26, this same theme of universal acknowledgment of God's uniqueness reappears — all mankind will know the LORD.

Isaiah 41:20 uses the same 'that they may see and know' formula to link God's acts with recognizing His uniqueness.

Isaiah 43:10 explicitly says 'before me no god was formed, nor shall there be any after me'—directly parallel to Isaiah 45:6.

Isaiah 44:6 declares 'besides me there is no god'—a nearly identical claim to Isaiah 45:6.

Isaiah 44:8 asks 'Is there a God besides me?' and answers 'There is no Rock'—echoing the exclusive claim of Isaiah 45:6.

1 Samuel 17:46 has David declaring 'that all the earth may know there is a God in Israel' — same goal of universal recognition.

Malachi 1:11 uses the exact phrase 'from the rising of the sun to its setting' to declare God's name great among the nations — a strong echo.

Ezekiel 39:21 continues the same theme: God sets his glory among the nations so they see his judgment and know he is the LORD.

Ezekiel 38:23 directly parallels this: God makes himself known in the eyes of many nations so they know he is the LORD, with no other.

Psalm 83:18 echoes this same phrase 'that they may know' that the LORD alone is Most High over all the earth, emphasizing God's exclusive sovereignty.

Naaman's confession in 2 Kings 5:15 fulfills the universal recognition of God's uniqueness proclaimed in Isaiah 45:6.

1 Kings 8:60 echoes this exactly: 'that all the peoples of the earth may know that the LORD is God; there is no other.'

2 Samuel 22:32 asks rhetorically who is God besides the LORD — directly affirming the exclusive deity stated here.

Deuteronomy 6:4 declares the LORD is one — the same truth that there is no other God, foundational to Israel's faith.

In Mark 12:32, a scribe echoes this exact declaration that God is one and there is no other — affirming the oneness.

In James 2:19, belief in one God is acknowledged even by demons — showing that mere assent is not saving faith.