What ETERNAL TRUTH separates Christianity and the Christian from every religion, cult, sect, in the World today?

Why is Christianity different, unique, among the religions of the World? Christianity recognizes, acknowledges, proclaims, the ETERNAL TRUTH that Jesus Christ is God, Creator, Messiah, Judge, having manifest in flesh within the realm of Time via the hypostatic union (Philippians 2:5-11). Christianity acknowledges that mankind is unable to earn salvation (Ephesians 2:8-9; Romans 3:20; Galatians 2:16; 3:10), eternal life, but only by trusting-believing in Jesus as God who died to pay our sin-debt is mankind justified, forgiven of sin, before the Father (John 3:16-18; Romans 10:9-10). Jesus is the unique, only begotten, Son of God, coequal with the Father and the Spirit, eternal, everlasting (Hebrews 1); Jesus has and will dwell among mankind and it is Jesus that has made the Father known as the Father is Spirit (John 1:18; John 4:24; 6:46; Matthew 11:27).

Be warned,

Anyone who denies Jesus is God who entered Time in flesh to atone for the sins of the World will not enter the Kingdom of God (John 8:24) as the Holy Spirit testifies of this truism; if anyone is absent the Spirit (Ephesians 1:13-14), they are not redeemed, they remain in their sin, they will NOT enter the Kingdom of God (John 3:5; John 8:24). Jesus is God and the redeemed know this, believe this, trust in this, because the redeemed are God’s children and the Spirit of Truth (John 16:13) has sealed them with the Covenant of Promise, forever (Ephesians 1:13; John 10:28-30).

Every Jew; every child of Jacob, take heed of this Truth lest you not be named among the remnant (Isaiah 10:22; Romans 9:27). Every Muslim – Islamist, Jehovah’s Witness, Mormon, Buddhist, Atheist, be warned, unless Jesus Christ is your God and you believe with a sincere heart that He alone has made atonement for your sin via the Crucifixion, you will NOT enter the Kingdom of God subsequent to the death of your body in Time (John 14:6; 3:16).