The Gospel of John places a strong emphasis on Jesus' preexistence to highlight his divine nature and eternal existence. This emphasis serves several purposes within the context of John's Gospel: 1. Revealing Jesus' identity as the eternal Son of God: John presents Jesus as the Word (Logos) who was with God and was God from the beginning (John 1:1). By emphasizing Jesus' preexistence, John establishes his divine nature and eternal existence as the Son of God. 2. Emphasizing Jesus' role in creation: John highlights that Jesus was not only present at the beginning but was also intimately involved in the creation of the world. John 1:3 states, "Through him all things were made." By emphasizing Jesus' preexistence, John establishes his role as the divine agent in creating and sustaining the universe. 3. Signifying Jesus' authority and power: By emphasizing Jesus' preexistence, John emphasizes his authority and power. Jesus declares in John 17:5, "And now, Father, glorify me in your presence with the glory I had with you before the world began." This statement reinforces Jesus' divine authority and displays his eternal glory and position. 4. Fostering faith in Jesus as the Messiah: The emphasis on Jesus' preexistence serves to strengthen the faith of John's readers that Jesus is truly the promised Messiah. By highlighting Jesus' eternal existence, John firmly establishes Jesus' divine and unique role as the Son of God, reinforcing his claim as the long-awaited Savior. As a whole, John's emphasis on Jesus' preexistence in his Gospel emphasizes his divinity, power, and eternal nature, strengthening the belief and faith of his readers in Jesus as the Messiah and the Son of God.

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Does the Bible support the pre-existence of Jesus?

ANSWER

The biblical argument for the pre-existence of Jesus is certainly multi-faceted. Pre-existence is defined as “existence in a former state or previous to something else.” In the case of Jesus Christ, His pre-existence means that, before He became a man and walked upon the earth, He was already in existence as the second Person of the triune God. The Bible not only explicitly teaches this doctrine but also implies this fact at various points throughout the Gospels and Epistles. In addition, Jesus’ own actions reveal His divine identity and, as a consequence, His pre-existence.

Several places in the New Testament explicitly teach Jesus’ pre-existence. Jesus said, “And now, Father, glorify me in your presence with the glory I had with you before the world began” (John 17:5). This passage alone is sufficient to show that the Scripture supports Jesus’ pre-existence, but it is just one of many such passages. Jesus Himself explicitly taught His own pre-existence (John 3:13; 6:33, 38, 62; 8:23; 16:28). Christ even said that He existed prior to Abraham’s birth (John 8:58–59) even though Abraham’s birth preceded Jesus’ own birth by many centuries! Several texts present Jesus as pre-existing with His Father (Romans 8:3; 1 John 1:2; Galatians 4:4). Several passages even identify Jesus as the Creator (John 1:2–3; Colossians 1:16–17; Hebrews 1:2).

Probably the most powerful evidence for the pre-existence of Christ was the very behavior of Jesus Himself. He was often doing and saying things that only the God of Israel had the right or power to do. Jesus’ healing of the paralytic in Mark 2 was done to demonstrate His authority and His ability to forgive sins (Mark 2:3–12). Jesus’ Jewish audience was well aware that such actions were reserved only for Yahweh. Jesus’ actions in Luke 7 drew a similar reaction (Luke 7:48–50).

That Jesus pre-existed in His divinity is further proven by His being the object of worship repeatedly in the Gospels (Matthew 28:9, 17; Luke 24:52; John 9:38; 20:28). Never did Jesus reject such adoration. He saw such worship as entirely appropriate. Jesus implied that He had authority over the Sabbath (Mark 2:28) as well as the authority to abolish the Law (Ephesians 2:14–15). Such behavior is sheer blasphemy coming from anyone short of a divine (and therefore pre-existent) Person.

In addition, Jesus identified Himself as the divine Son of Man (Mark 14:61–64) and claimed to be able to raise Himself from the dead (John 10:17–18)! This turned out to be the very miracle that He claimed would authenticate His radical claims and ministry (Matthew 12:38–40;16:1–4). Jesus accomplished this grand miracle and gave convincing proof of it (Luke 24:36–43; John 20:26; 21:1-14; Acts 1:3–6). This miracle established Jesus’ claim to deity and thus provides further confirmation of His pre-existence. 

 https://www.gotquestions.org/pre-existence-Jesus.html