James 4:17
So whoever knows the right thing to do and fails to do it, for him it is sin.
Yet if someone does not know what is right, if they still sin, they are guilty and the penalty for any sin is death.
If someone abuses their family, or perverts any child, they are guilty, and condemned by God's Word - regardless of that they think or 'know'.
They are commanded therefor , whether husband or wife, to repent, to sin no more,
to turn to Yahweh, by faith , and sin no more. The command is true, the commandment is right, to disobey is sin, and death is the result. (regardless totally of who says otherwise -
if a husband or wife says to the other - kill this child, or rape this child,
then, if they 'obey', they are guilty, and the penalty is death,
no matter what they think)