I will sing of mercy and judgment:
unto thee, O Lord, will I sing.
I will behave myself wisely in a perfect way.
O when wilt thou come unto me?
I will walk within my house with a perfect heart.
I will set no wicked thing before mine eyes:
I hate the work of them that turn aside;
it shall not cleave to me.

If we want to get to heaven we have to behave wisely and with humility.  And if we want to judge faults, judge our own.