For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
John 3:16 KJV

For the wages of sin is death, but the gift of God is eternal life in Christ Jesus our Lord.
Romans 6:23 NIV

He saved us, not on the basis of deeds which we have done in righteousness, but according to His mercy, by the washing of regeneration and renewing by the Holy Spirit, whom He poured out upon us richly through Jesus Christ our Savior….
Titus 3:5,6 NASB

Jesus answered and said unto her, Whosoever drinketh of this water shall thirst again: but whosoever drinketh of the water that I shall give him shall never thirst; but the water that I shall give him shall be in him a well of water springing up into everlasting life.
John 4:13-14 KJV

Verily, verily, I say unto you, He that believeth on me hath everlasting life.
John 6:47 KJV

Surely goodness and mercy shall follow me all the days of my life: and I will dwell in the house of the LORD for ever.
Psalm 23:6 KJV