Leading up to verse 1, Jesus has descended to stand before the people gathered at Bountiful. He has had that multitude come to him and examine his wounds. He has called twelve disciples, and then given to them a version of the Old World Sermon on the Mount. He has added even more teachings. It has been a very long day, and one that undoubtedly had sapped the people’s spiritual and physical strength.
Jesus compassionately recognizes this, and therefore suggests that he had done enough for the day. He tells them to go home and rest, promising that he would return the next day. His statement that “Behold, my time is at hand” must refer to the information in verse 4: “But now I go unto the Father, and also to show myself unto the lost tribes of Israel.”