We are helpless and our attempts to save ourselves are feeble, so who do we look to for salvation? John 3:16 - For God so loved the world that he gave his only son, so that whosoever believe in him will not perish but have eternal life. This is the answer, Jesus is the one we look to, he demands us to believe in him so that we may have eternal life. We are in a very dangerous situation, but most people don't see this, they are blinded. Naturally they don't see the need to believe in him because they don't see the need to be saved. When we sin we are in complete rebellion against God, he is angered by this, and his wrath would be thrust upon us, but Jesus took all our sins upon himself. He bore God's wrath that was rightfully against us. Jesus demands that we believe in him because we cannot do anything to help him save us.
Believing in Jesus not only means believing that he can save us, it means that we must understand that he rose again. Believing in the physical things that he did are just as important as believing that he can save us. Also we must trust him, for it is not believing about him only that matters, it is also trusting in him.
Besides giving us eternal life he also gives us living water to drink so that we may never be thirsty again. But it is not a physical thirst that shall be quenched, it is water that will quench the soul. Jesus is this water and we must trust him that he will save us.