Try to live a pure life, not that it is for your salvation, but because we want to show God how much we trust and love Him. Just like with the people in our lives whom we love - if we love them we want to please them. I think of my little 3-year old son who is constantly trying to show me how much he loves me. He gives me hugs and kisses and is happy to see me happy, and likewise when I get angry with some of the things he does, he tries his best to fix it. This is how we should approach God - to show Him how much we love Him for all the things He has done for us, we should strive to do things that are pleasing to Him. He is holy, so we should strive to be holy too.

1 Peter 1:13-16