1 John 3:20 For if our heart condemns us, God is greater than our heart, and knows all things.
Each of us has a conscience that allows us to discern right from wrong; something that is inside of us and needs to be nurtured.
If we continually ignore it or go against it, we make it of no effect and then others say we have no conscience; but it is still there.
Our consciences let us know when we do things wrong as an early warning system to fix our ways before we go under.
God knows more than our consciences because He is the one who planted them inside of us; trust more in God to nurture your conscience still further.