It is not for you to know the times or the seasons.
The disciples were anxious to know about the future, to have a sort of programme or chart of the coming years. They were somewhat inclined to speculation.
Jesus taught them that they had nothing to do with the times and seasons, which were in the Father’s authority. They did not need to trouble themselves about these things.
The lesson is important for all of us. There are things it is better we should not know beforehand. Indeed, it is a merciful provision that we cannot see into the future. If we could see the sorrows, struggles, defeats, and trials that we shall have to meet before we get home, our bright days would be saddened by anticipation of these things.
As it is, we go on, unconscious of shadows that lie before us, living as if all are clear and bright, trusting God for the future. Then when we come to the hard points, God gives us grace to meet them. “Sufficient unto the day is the evil thereof.”