"Now faith is the substance of things hoped for, the evidence of things not seen." Hebrews 11:1. God expects us to live by faith. He has given all of us a measure of faith so that we can walk by faith and not by sight. "But without faith it is impossible to please Him: for he that cometh to God must believe that He is, and that He is a rewarder of them that diligently seek Him". Hebrews 11:6. Being a Christian, a follower of our Lord Jesus Christ, is a faith walk. Over and over again during Jesus' ministry He told those to whom He ministered, "According to your faith be it unto you" (Matthew 9:29), "Your faith has made you whole" (Matthew 9:22), "Great is thy faith." (Matthew 15:21-28), "And Jesus seeing their faith saith unto to sick of the palsy, Son, your sins are forgiven" (Mark 2:5). Jesus encourages us to have a persistent faith, keep asking, don't give up, don't doubt.
Faith without works is dead, we must activate our faith: do something to show that we believe God, that He will do whatsoever we ask. You need a job and are praying for God to open a door for you. Then go out and put in applications, expecting God to answer your prayer. Your wayward children are not listening to you as you try to lead them in the right way. Put them in the hands of Jesus by faith and prayer, and leave them there; expecting them to be saved. "Yea, a man may say, Thou hast faith, and I have works; shew me thy faith without thy works, and I will shew thee my faith by my works. But wilt thou know, O vain man, that faith without works is dead?" James 2:18 & 20.
Our faith is made perfect when we move on what we believe God to do. We don't just sit on our hands doing nothing. When Elisha told to widow woman to get as many jars as she could borrow from her neighbors, she didn't ask him if he was crazy. She acted on faith believing that God was going to bless her through the prophet. When she began to pour from the little pot of oil she had, into the vessels, all the jars were filled with oil. She had enough to sell and pay her debt and more than enough to live on. (2 Kings 4:1-7). Sometimes God gives us instructions of what to do to activate our faith. Don't question Him, just do what He says. Naaman went to Elisha to be healed of lepersy and was told to wash in the Jordan River seven times. He was indignant at first, then he obeyed and was healed immediately. His indignation turned to faith. (2 Kings 5:10-14).
We can't go by what our natural eyes see: we have to see with our spiritual eyes; see the invisible as though it is visible. We don't need faith for what we can see, we need faith for what we can't see. When we don't put our faith in action, it means we don't trust God; and if we don't trust Him, Who has all things in His hand, then we are closing ourselves off from the blessings He wants to give us. "For whatsoever is born of God overcometh the world: and this is the victory that overcometh the world, even our faith." 1 John 5:4.