You must understand something. Suppose the owner of the house knew what time of night the robber was coming. Then he would have kept watch. He would not have let his house be broken into.
“So keep watch! You do not know when the owner of the house will come back. It may be in the evening or at midnight. It may be when the rooster crows or at dawn.
He saw the disciples pulling hard on the oars. The wind was blowing against them. Shortly before dawn, he went out to them. He walked on the lake. When he was about to pass by them,
Then the voice I had heard from heaven spoke to me again. It said, “The angel is standing on the sea and on the land. Go and take the scroll from him. It is lying open in his hand.”