Need of entrustment to Mary

„Just as in the natural and corporeal order a child has a father and mother, so in the supernatural and spiritual order we have a Father – God and a Mother – Mary. All true children of God and the elect have God as their Father and Mary as their Mother, and whoever does not have Mary as their Mother does not have God as their Father. And therefore those who will be condemned, namely heretics, schismatics, etc., who hate the Blessed Virgin Mary or treat Her with contempt and indifference, do not have God for their Father, although they boast about it, because they do not have Mary for their Mother. If they had her as their mother, they would love and honor her, just as a true and good child loves and honors the mother who gave birth to him.”

Saint Louis Maria Grignion de Montfort, Treatise on True Devotion to the Blessed Virgin Mary