John 14:6 - Jesus saith unto him [Thomas], I am the way, the truth, and the life: no man cometh unto the Father, but by me.
Ephesians 2:8 - For by grace are ye saved through faith; and that not of yourselves: [it is] the gift of God
Romans 6:23 - For the wages of sin [is] death; but the gift of God [is] eternal life through Jesus Christ our Lord.
John 6:47 - Verily, verily, I say unto you, He that believeth on me hath everlasting life.
Romans 3:10 - For there are none who are righteous.. no, not one
1 John 1:9 - When we confess our sins...God is Faithful and Just to forgive us of our sins and cleanse us of all unrighteousness
Romans 10:9 - If you confess with your mouth, Jesus is Lord, and believe in your heart that God has raised Him from the dead, you will be Saved
Need anymore? Sorry dude, as far as the bible goes, your "Stupid Christians" are correct. According to the bible if you have ever sinned, you have fallen short of heaven. Old Testament jews used to offer blood sacrifices to cleanse sin, but we sin constantly, there aren't enough animals to kill to get one person into heaven. Thats why Jesus' death was necissary. He is the sacrificial lamb that cleanses the sin of all who believe in him. However, if you truly believe in Jesus' sacrifice and his teachings, you will do good anyway. Good works are a sign of strong faith, but they do not get you into heaven.
James 2:14 - What doth it profit, my brethren, though a man say he hath faith, and have not works? can faith save him?
Here's a website that seems to explain it pretty well.
http://www.rationalchristianity.net/perfection.html
theBishop