How do we know Jesus is God in the Bible?

John 1:1 and John 1:14 establish Jesus' divinity, stating that in the beginning was the Word, and the Word was with God, and the Word was God. This indicates that Jesus is not only with God but is indeed God. Furthermore, Isaiah's prophecies affirm that the Lord God will come, which is fulfilled in the person of Jesus Christ, demonstrating that He embodies deity. The theological concept of the hypostatic union, where Christ is fully God and fully man, is foundational to understanding His role as our redeemer. His declarations and actions during His earthly ministry consistently reveal His divine nature.