Irreconcilable Differences Between Christianity and Islam
Sometimes Muslims will claim that Christians and Muslims worship the same God, but this would violate the Law of Noncontradiction due to the fact that Christianity and Islam make completely opposite claims that cannot both be true.
When one looks into Christianity and Islam, it is clear that Christians and Muslims do not worship the same God:
1) Concerning Jesus' Divinity:
Christianity says Jesus is God: Mark 14:62; John 1:1-3, 8:58, 20:28; Romans 9:5; Colossians 1:15-20; Titus 2:13; 2 Peter 1:1.
Islam says Jesus is not God, but just a prophet: Surah 4:171, 5:17, 72, 75.
2) Concerning Jesus' Crucifixion and Resurrection:
Christianity says that Jesus was crucified and resurrected to atone for the sins of humanity: Matthew 26:28, 27:35, 28:5-6; Mark 14:24, 15:24, 16:6; Luke 23:33, 24:5-7; John 19:18, 20:1-18; Romans 4:25.
Islam says that Jesus was not crucified nor resurrected: Surah 4:157-158.
3) Concerning Jesus Being Sacrificed for Our Sin:
Christianity teaches that Jesus was the Lamb of God who died for the sins of the world: Matthew 26:26-28; John 1:29, 36; 1 Corinthians 15:3.
Islam does not teach that Jesus was the Lamb of God and it teaches that He didn't die for the sins of the world: Surah 4:157-158.
4) Concerning the Trinity:
Christianity teaches the doctrine of the Trinity: Matthew 3:16-17; 28:19; Mark 1:10-11; Luke 3:22; John 1:32-34; 2 Corinthians 13:14.
Islam denies the Trinity and teaches Tawhid: Surah 4:171, 5:73.
5) Concerning Salvation:
Christianity says that we are saved by knowing Jesus by grace through faith, and not by works: Matthew 7:22-23; Romans 3:24-25; Galatians 2:16; Ephesians 2:8-9; Titus 3:5.
Islam says we are saved by works: Surah 23:101-104.
6) Concerning God as Our Father:
Christianity says that God is our Father: Matthew 6:8, 9, 14, 32; Luke 11:13; Romans 1:7; 1 Corinthians 1:3; Ephesians 1:2.
Islam says that God is the Father of no one: Surah 5:18; 19:88-93 (In the Islamic tradition there are 99 names of Allah, and not one of them refers to Allah as Father).
7) Concerning God's Love for Sinners:
Christianity says that God's love is unconditional and that He loves sinners and unbelievers: John 3:16; Romans 5:8; 1 John 4:19.
Islam says that God doesn't love unconditionally and that He doesn't love sinners and unbelievers: Surah 3:32, 30:45.
8) Concerning Sin:
Christianity teaches that God doesn't want people to sin: John 5:14, 8:11; 1 Peter 1:15-16.
Islam teaches that God does want people to sin: Sahih Muslim 37:6621, 6622.
9) Concerning God and Deceit:
Christianity teaches that there is no deceit in God and that God does not lie: Isaiah 53:9; Titus 1:2; 1 Peter 2:22.
Islam teaches that God is the best deceiver: Surah 3:54, 8:30.
10) Concerning God's Spirit Indwelling the Believer:
Christianity teaches that the Holy Spirit indwells the believer: John 14:17; Romans 8:9-11; 1 Corinthians 3:16, 6:19; 2 Timothy 2:14; 1 John 4:4.
Islam does not teach that God's Spirit indwells the believer.
11) Concerning Heaven:
Christianity teaches that people are neither married nor given in marriage in heaven but are like the angels: Matthew 22:23-30; Mark 12:18-25; Luke 20:27-36.
Islam describes heaven like a brothel, where men will have an eternal erection and will be given 72 virgin wives to have sex with: Surah 37:48, 78:33; Sahih Al-Bukhari 60:402; Jami At-Tirmidhi 1663, 2562 (Dar-us-Salam reference); Sunan Ibn Majah 4337 (Dar-us-Salam reference).
12) Concerning the Title of "King of Kings":
Christianity teaches that Jesus is "the King of kings and Lord of lords": 1 Timothy 6:15; Revelation 17:14, 19:16.
Islam teaches that the most awful name to Allah on the day of resurrection is the title "king of kings" and the most wretched and vile person in the sight of Allah on the day of resurrection is the one who is called "king of kings": Sahih Al-Bukhari 73:224, 225; Sahih Muslim 25:5338, 5339; Jami At-Tirmidhi 2837 (Dar-us-Salam reference).