What is faith? Hebrews 11:1 tells us 'Faith is confidence in what we hope for and assurance about what we do not see.' It means you know the result of your hope and you believe before you see. After you see and then you believe, that is not faith.
But I think it is difficult for our human beings to believe before we see. We always say show me or we can't believe. But how about air? Can you see it? Because scientists have found it and told us and you accept its exist. But God is also there and he worte Bible to let us know him. But we can't believe becuase you must see him or you can't accept him. So faith is important for us. Bible tells us 'And without faith it is impossible to please God, because anyone who comes to him must believe that he exists and that he rewards those who earnestly seek him. ' Hebrews 11:6
Jesus Christ has died for us and he waits for us to believe in him and accept him all the time. Just walk by faith.
Even after we accepted Jesus Christ, we can't believe God can do anything sometimes. We always do anything firstly and after we can't do anyting, we come in front of God. Come on! Come to Jesus Christ firstly, he can help us whatever bigh things or little things! Just walk by faith.
Still remember Peter on the sea? He walked on the sea but when he was afraid and has no faith that God can support him strongly, he would sink. We are the same, we only have a little faith. Jesus said to us 'Because you have so little faith. Truly I tell you, if you have faith as small as a mustard seed, you can say to this mountain, 'Move from here to there,' and it will move. Nothing will be impossible for you.' Matthew 17:20 Just walk by faith!