The New Testament is rife with talk of immortality. Jesus and his followers are often quoted, publicly describing variations of John 3:15. International Children’s Bible.
Then everyone who believes in him can have eternal life.
Eternal life came only through the blood of Jesus. It was not available before Jesus died, and believing in Jesus is the only way to gain eternal life after his crucifixion. God and Jesus knew of no other way for mankind to gain salvation.
Matthew 26:38-39 The Message
38 Then he said, “This sorrow is crushing my life out. Stay here and keep vigil with me.” 39 Going a little ahead, he fell on his face, praying, “My Father, if there is any way, get me out of this. But please, not what I want. You, what do you want?”
Acts 4:12 Amplified Bible
And there is salvation in no one else; for there is no other name under heaven that has been given among people by which we must be saved [for God has provided the world no alternative for salvation].”
Accepting and believing in Jesus is the only way to acquire eternal life. This tenet is the beating heart of faith for all who claim to be Christian. His sacrifice was for all of mankind, regardless of background or when they lived.
Romans 10:8-13 King James Version
8 But what saith it? The word is nigh thee, even in thy mouth, and in thy heart: that is, the word of faith, which we preach;
9 That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved.
10 For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation.
11 For the scripture saith, Whosoever believeth on him shall not be ashamed.
12 For there is no difference between the Jew and the Greek: for the same Lord over all is rich unto all that call upon him.
13 For whosoever shall call upon the name of the Lord shall be saved.
Do you believe all scriptures agree that Jesus alone provides salvation and immortality to humanity? Do you know scriptures that disagree?