In which Gospel does Jesus say, "Before Abraham was, I am"?

In the Gospel of John, Jesus says, "Before Abraham was, I am." This statement can be found in John 8:58.
This phrase is significant because it reveals Jesus' divine nature and his eternal existence. Jesus is claiming to exist before Abraham, who lived thousands of years before Jesus was born. By saying "I am," Jesus is using a phrase that echoes the name of God revealed to Moses in Exodus 3:14.
In Judaism, God revealed his name as "I am who I am," which signifies his eternal and unchangeable nature. So when Jesus uses the phrase "I am," he is equating himself with God and claiming to share the same eternal nature.
This statement also suggests that Jesus is the Messiah promised in the Old Testament. Throughout the Gospel of John, Jesus repeatedly reveals his identity as the Son of God and the long-awaited Messiah. By declaring his eternal existence before Abraham, Jesus is asserting his divine nature and confirming that he is the fulfillment of God's promises.
The Gospel of John provides numerous instances where Jesus asserts his divinity and shares profound teachings. It offers a unique perspective on Jesus' life, ministry, and teachings, highlighting his identity as the Son of God.