Have it ever occurred to you that we loop back in time the moment we make a mistake about it? Doubting instinct does not work since it is for a fact that people time travel when mistakes or chaos occurs. For God, who fulfills our wishes, allows us too. Meaning, we wishes for us to complete our life's tasks. But what are the goals in life that we must fulfill? That I can assure you is in God's Plan.
Did you ever doubt your instinct that you looped back in time? For a man named Jackson, he looped back in time for several times and discovers each time is different. As to why it is needed, he discovers that God and Devil has a little game of chase, and wants you to fight alongside him. Who else than God.