Exodus 32:1-6

People naturally drift toward evil.

Romans 3:10-12
10 As it is written, There is none righteous, no, not one: 11 There is none that understandeth, there is none that seeketh after God. 12 They are all gone out of the way, they are together become unprofitable; there is none that doeth good, no, not one.

Romans 3:23
23 For all have sinned, and come short of the glory of God;

I John 1:8
8 If we say that we have no sin, we deceive ourselves, and the truth is not in us.

This is why we need to attend a Bible-believing, soul-winning church, and submit ourselves to Godly authority.