Brigham Young taught,

It is the mother’s influence that is most effective in molding the mind of the child for good or for evil. If she treat lightly the things of God, it is more than likely her children will be inclined to do the same, and the Lord will not hold her guiltless when He comes to make up His jewels; He will disown all such when He comes to claim His own, and will say, Go hence, I never knew you.

(Brigham Young, JD 18:263)