Jastor, You ask this question because you are searching for explanations of truth through knowledge. Although I’m muslim, I’ve asked the same questions you did to christians and received similar answers. The simple answer is that they believe Jesus is God becuase the bible implies it. It’s ironic though how such an important concept is not explicitly stated in the Bible. Jesus according to paul/mathew/john/luke ect… should have made it clear and said explicity “I am the lord” or something similar so as to clear any ambiguities or questions.
Even if that were the case, common sense tells us we shouldn’t believe in something simply becuase it is written somewhere. It’s necessary for a person to believe in the fundamentals of faith using his own insight and understanding and it doesn’t necessarily have to be a profound understanding. The idea of a God who is governed by the laws he created is a contradition in itself. On the one hand christians believe God is all powerfull and above everything, yet on the other hand he is born to a human and is subservient to the laws of nature. On one hand he is the governor, on the other hand he is being governed.
scripturecatholic.com/jesus_christ_divinity.html
Jesus Christ Claims to be God
Matt. 4:7; Luke 4:12 - Jesus tells satan, “you shall not tempt the Lord your God” in reference to Himself.
Matt. 5:21-22; 27-28; 31-32; 33-34; 38-39; 43-44 - Jesus makes Himself equal to God when He declares, “You heard it said…but I say to you…”
Matt. 7:21-22; Luke 6:46 - not everyone who says to Jesus, “Lord, Lord.” Jesus calls Himself Lord, which is God.
Matt. 9:2; Mark 2:5; Luke 5:20; 7:48 - Jesus forgives sins. Only God can forgive sins.
Matt. 12:8; Mark 2:28; Luke 6:5 - Jesus says that He is “Lord of the Sabbath.” He is the Lord of God’s law which means He is God.
Matt. 18:20 - Jesus says where two or three are gathered in His name, there He is in the midst of them.
Matt. 21:3; Luke 19:31,34 - Jesus calls himself “Lord.” “The Lord has need of them.”
Matt. 26:64; Mark 14:62; Luke 22:70 - Jesus acknowledges that He is the Son of God.
Matt. 28:20 - Jesus said He is with us always, even unto the end of the world. Only God is omnipresent.
Mark 14:36 - Jesus calls God “Abba,” Aramaic for daddy, which was an absolutely unprecedented address to God and demonstrates Jesus’ unique intimacy with the Father.
Luke 8:39 - Luke reports that Jesus said “tell how much God has done for you.” And the man declared how much Jesus did.
Luke 17:18 - Jesus asks why the other nine lepers did not come back to give praise to Him, God, except the Samaritan leper.
Luke 19:38,40 - Blessed is He who comes in the name of the Lord. If these were silent, the very stones would cry out.
John 5:18 - Jesus claimed to be God. The Jews knew this because Jesus called God His Father and made Himself equal to God. This is why Jesus was crucified.
John 5:21-22 - Jesus gives life and says that all judgment has been given to Him by the Father.
John 5:23 - Jesus equates Himself with the Father, “whoever does not honor the Son does not honor the Father who sent Him.”
John 6:38 - Jesus says, “For I have come down from heaven.”
John 8:12 - Jesus says “I am the light of the world.” - 1 John 1:5 - God is light and in him there is no darkness at all.
John 8:19 - Jesus says, “if you knew me, you would know my Father also.”
John 8:23 - Jesus says that He is not of this world. Only God is not of this world.
John 8:58 - Jesus says, “Before Abraham was, I AM.” Exodus 3:14 - “I AM” means “Yahweh,” which means God.
John 10:18 - Jesus says He has the power to lay down His life and take it up again - Gal. 1:1 - God raised Jesus to life.
John 10:30 - Jesus says, “I and the Father are one.” They are equal. The Jews even claimed Jesus made Himself equal to God. Jesus’ statement in John 14:28, “the Father is greater than I,” cannot contradict John 10:30 (the Word of God is never in conflict). Jesus’ statement in John 14:28 simply refers to His human messianic role as servant and slave, which He, and not the Father or the Holy Spirit, undertook in the flesh.
John 10:36 - again, Jesus claims that He is “the Son of God.”
John 10:38; 14:10 - “the Father is in me and I am in the Father” means the Father and Son are equal.
John 12:45 - Jesus says, “He who sees Me sees Him who sent Me.” God the Father is equal to God the Son.
John 13:13 - Jesus says, “You call me Teacher and Lord and you are right for so I AM.”
John 14:6 - Jesus says “I am the way, and the truth and the life.” Only God is the way, the truth and the life.
John 16:15 - Jesus says, “all things that the Father has are Mine.” Jesus has everything God has which makes Him God.
John 16:28 - Jesus says that “He came from the Father and has come into the world.”
John 17:5,24 - Jesus’ desire is for us to behold His glory which He had before the foundation of the world.
John 20:17 - Jesus distinguishes His relationship to the Father from our relationship by saying “My Father and your Father.”
Rev. 1:8 - God says He is the “Alpha and the Omega.” In Rev. 22:13, Jesus also says He is the “Alpha and Omega, the First and the Last, the beginning and the end.” The only possible conclusion one can reach is that Jesus is equal to the Lord God.
Rev. 1:17 - Jesus says again, “I am the First and the Last.” This is in reference to the God prophesied by Isaiah in Isaiah 44:6, 41:4, 48:12.
Rev. 1:18 - Jesus, the First and the Last, also says “I died, and behold, I am alive for evermore.” When did God ever die? He only did in the humanity of Jesus Christ our Lord and God.
Rev. 2:8 - Jesus again says, “The words of the First and the Last, who died and came to life.” When did God die and come to life? In our Lord and Savior Jesus Christ.
More evidence from scripture on the website, but I doubt you are interested since islam is rooted in lies.
