Malachi 4:5-6

Malachi 4:5: "Behold, I will send you Elijah the prophet before the coming of the great and dreadful day of the LORD:"

Malachi 4:6: "And he" [Elijah] "shall turn the heart of the fathers" [The teachers] "to the children," [The followers of Christ] "and the heart of the children to their fathers..."

Matthew 17:11

Matthew 17:11: "And Jesus answered and said unto them, Elias" [Elijah] "truly shall first come, and restore all things."

John 6:39-40

John 6:39: "And this is the Father's will which hath sent me," [Jesus] "that of ALL which he hath given me I should lose nothing, but should raise it up again at the last day."

John 6:40: "And this is the will of him that sent me, that every one which seeth the Son, and believeth on him, may have everlasting life: and I will raise him up at the last day."