And if ye will receive it, this is Elias, which was for to come.
And he shall go before him in the spirit and power of Elias, to turn the hearts of the fathers to the children, and the disobedient to the wisdom of the just; to make ready a people prepared for the Lord.Luke 1:17 KJV
Behold, I will send you Elijah the prophet before the coming of the great and dreadful day of the LORD:Malachi 4:5 KJV