Hoal @robertgenito, through prayer we communicate with God, to thank and also to ask or simply to talk to him, since he is our creator! ... it is important to pray, because our spiritual life is strengthened, and the longer we are in the presence of God, we know him more and we hear his voice. Because God says, that his sheep hear his voice, they know his whistle. Because it increases our faith. Because when we have a problem, whatever it is, you know that you can go to God's presence, and seek help from him. Prayer changes all the things in the world.