He promises an eternity with Him to those who believe in Him, love Him, serve Him. Also to those who read His word and follow it (with God's help).
WHO IS JESUS?
He is the Son of God, who came to this planet 2,000 years ago. He is known by several names - The Lamb of God, Messiah, Saviour. The Bible tells us His birth was supernatural - He was conceived by the Holy Spirit. Jesus said He was and is the Son of God. More importantly, He proved it by the miracles that He did. They are recorded in the New Testament.
Jesus didn't have a house. He always stayed with friends or relatives. He had little or no money or material possessions. Yet multitudes flocked around Him everywhere. He said to love your enemy, and proved it when dying on the cross after being spat upon, flogged, verbally abused. a crown of thorns jammed on His head. Then he was nailed to a cross. He said "Father forgive them for they know not what they do." Surely only the Son of God could do that.