What is the worst sin? Are some sins "worse" than others? Aren't all sins the same?

Contrary to the fervent belief of many Christians, some sins *are* worse than others. Jesus said that the one who handed Him over to be crucified was guilty of a "greater sin."

Jesus said that some cities deserved greater condemnation on Judgment Day because of the preaching they had received.

So, some sins are worse than others.

Which sin, then, is the worst?

The devil's sin.

What is the devil's sin? What is the sin that keeps every "good" decent and moral person away from Jesus?

What sin prevents us from growing in grace and being any good at all?

What sin?

Pride.