Malachi 4:5

5 aBehold, I will send you bElijah the prophet cbefore the great and awesome day of the Lord comes.

Mark 9:11-13

11And they asked him, “Why do the scribes say dthat first Elijah must come?” 12And he said to them, Elijah does come first eto restore all things. And fhow is it written of the Son of Man that he should gsuffer many things and hbe treated with contempt? 13But I tell you that Elijah has come, and ithey did to him whatever they pleased, as it is written of him.”

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