You are mine.
Isaiah 43 does not deny the waters or the fire. It says God is with you through them, and they do not get to name you.
Scripture · Source
“But now Yahweh who created you, Jacob, and he who formed you, Israel, says: “Don’t be afraid, for I have redeemed you. I have called you by your name. You are mine. When you pass through the waters, I will be with you, and through the rivers, they will not overflow you. When you walk through the fire, you will not be burned, and flame will not scorch you.”Isaiah 43:1-2 · Word of God