Luke 24:50

‘And he led them out until they were over against Bethany, and he lifted up his hands, and blessed them.'

Then having prepared them and opened their minds to understand the Scriptures, and having promised them the power that was coming to enable them for their future responsibility, He led them out to the Mount of Olives in the direction of Bethany, and their He lifted up His hands and blessed them. But Luke does not mention the Mount of Olives, for he has already shown that to be the place of suffering and judgment (Luke 22:39).

Here Jesus is probably acting as a father to His children, although it is always possible that He was acting as a greater Moses, leading them out and preparing them to face battle (Exodus 17:12), or a greater Elijah, about to be taken up to Heaven, and responding to a plea for the Spirit of God (2 Kings 2:9), or possibly both (compare Luke 9:30). If there is the comparison there was no danger of His arms tiring, nor was there any doubt about the coming of the Spirit on His own, for He blessed them there.