The Bible says that we should pray without ceasing and that God is near to all who call on Him. Psalm 145:18-19 says "The LORD is near to all who call on him, to all who call on him in truth. He fulfills the desires of those who fear him; he hears their cry and saves them." So when we look up in times of need, it shows that we're trusting in God and relying on Him to help us. It also lets Him know that we're paying attention and that we want Him to intervene on our behalf. And finally, it can be a source of strength for us as we face whatever challenges we're dealing with.