Can God lie?
No, He cannot. God cannot lie, and His promises are certain. He promised the Jews would still be in the land when Christ returns at the end of the tribulation, and because God cannot lie, that promise will be fulfilled.
Les explains that regardless of what may take place in Israel, believers can rest assured that the Jews will still be there when Christ returns at the end of the tribulation. This certainty rests on God's promise, for God just cannot lie. He will come back to the Mount of Olives as He left in Acts chapter 1, and His promise to Israel will be fulfilled.