Seven

While all sin is sin, all sins are not equal. According to the Bible, there are seven "deadly" sins in the eyes of God.

Here they are:

"There are six things which the Lord hates
Yes, seven which are an abomination to Him:

Haughty eyes
A lying tongue
And hands that shed innocent blood

A heart that devises wicked plans
Feet that run rapidly to evil

A false witness who utters lies
And one who spreads strife among brothers."

-- the seven deadly sins (Proverbs 6:16-19)