Lord gives special protection to devotee's family

A pure and exclusive devotee of the Lord serves his family interest more dexterously than others, who are attached to illusory family affairs. Generally people are attached to family matters, and the whole economic impetus of human society is moving under the influence of family affection. Such deluded persons have no information that one can render better service to the family by becoming a devotee of the Lord. The Lord gives special protection to the family members and descendants of a devotee, even though such members are themselves nondevotees!

(SB 1.19.35 - Purport)