...such as water, food or air. Humans are miserable without love. Without the shedding of blood there is no remission for sin, and we can't go to heaven.
In the Old Testament the priest offered a sacrifice for the atonement, killing a lamb and applying it's blood to the altar to cover sins.
In the New Testament we have the Lamb of God, slain on the cross, taking away the sins of the world, once for all.
Hebrews 11:6 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.
Without faith we can't please God, we can't be saved. Without faith we have no security in eternity. With faith in Jesus we can be certain. With faith we can be sanctified daily unto Him by prayer and Bible study. With sanctification we can go before a Holy God and say, "Please show me where I have failed you." Christians should do this daily.
Is God pleased with you? Have you by faith accepted Him as your Savior?
Without Him I could do nothing.
