Ecclesiasticus 48:1-10 There arose Elijah, a prophet like fire, whose Word blazed like a torch. By the Word of the Lord, he shut up the sky and three times he called down fire from heaven. By the Word of the Most High, you raised a corpse from the dead. You sent kings and famous men to destruction, how glorious you were, Elijah, in your miracles! You were taken up to heaven in a chariot by a fiery whirlwind. Scripture records that you are to come at the appointed time, to allay the Divine wrath before it destroys us all, to reconcile father and son and to restore the tribes of Jacob. Reference: REB Apocrypha
1 Kings 18:37-38 Answer me, Lord, and let this people know that You are God in Israel and that is You who have brought them back to their allegiance. Then fire from heaven fell, consuming the whole offering, the wood, the stones, the earth and the water in the trench.
Malachi 4:5-6 Look, I will send you the prophet Elijah before the great and terrible Day of the Lord comes. He will reconcile parents to their children, so as to avoid My curse on the Land.
Luke 1:17 John will go before Him as a forerunner, possessed by the power and spirit of Elijah, to reconcile father to child, to convert the rebellious to the ways of the righteous and to prepare a people that shall be fit for the Lord.
Ref: REB Abridged
Now, as the great and terrible Day of the Lord approaches, we can soon expect that someone, somewhere will rise up in the spirit and power of Elijah. It may be that the man himself will appear, as he never died and it is probable that he is one of the two witnesses who preach in Jerusalem during the time of the Anti Christ.
Elijah was the prophet who called down fire from heaven, maybe he will do so again when the Islamic nations and entities commence their attack on Israel.
It will be Elijah who will reconcile families, this mainly refers to the great reconciliation and rejoining of the House of Judah and the House of Israel. Ezekiel 37:15-28
This will lift the Divine curse off the Land and enable the restored tribes of Jacob, the Israelites and now as we know; every faithful Christian believer. They will go to their heritage and be the people fit to welcome Jesus at His Return.
All the holy Land, promised so long ago to the Patriarchs, will be cleared and cleansed by the forthcoming Day of the Lord’s judgement/punishment by fire from God’s storehouse, Deuteronomy 32:34-35, the sun.