And if you are willing to accept it, he is the Elijah who was to come.
And he will go on before the Lord, in the spirit and power of Elijah, to turn the hearts of the parents to their children and the disobedient to the wisdom of the righteous—to make ready a people prepared for the Lord.”Luke 1:17 NIV
“See, I will send the prophet Elijah to you before that great and dreadful day of the LORD comes.Malachi 4:5 NIV