You don't need to stop sinful behavior TO BE SAVED. Whatever changes God expects will be dealt with ONCE YOU ARE SAVED, and BECAUSE YOU ARE SAVED. Can anyone give up all their sinful bad habits? Jesus asked in John chapter 8, “Who is without sin among you?” Salvation is not about us giving up our sins to be saved. Salvation is about us admitting that we are guilty, hell-deserving, sinners; and therefore, we need a Savior to redeem us. Jesus has the nail-scarred hands and feet. Jesus is that precious Savior.
Once we are saved, God will work in our heart to make the necessary changes. A changed life is the FRUIT of the indwelling Holy Spirit, and not a part of the ROOT of saving-faith. Salvation is solely by Christ's righteousness (Romans 10:3-4; 2nd Corinthians 5:21; Matthew 6:33). Faith is the only righteous thing that I can do! Perhaps you say, “Preacher you're just trying to scare me!” You're absolutely right! Proverbs 1:7, “The fear of the LORD is the beginning of knowledge: but fools despise wisdom and instruction.” Matthew 10:28, “And fear not them which kill the body, but are not able to kill the soul: but rather fear him which is able to destroy both soul and body in hell.”
from this article: http://jesus-is-savior.com/billions_of_people_going_to_hell.htm
