The principle of “thou . . . and thy house” is indeed a great blessing and privilege. Not only is the head of the house saved as a child of God, but his whole house is also brought into a place of wondrous privilege by virtue of its connection with him. They do not stand in the same relationship to God as the saved parent, but they are in a place of blessing and privilege, for God’s purposes and desires are that a believer’s whole household should be saved. The Christian parent acting in faith and obedience to Him can count upon God for their salvation. This is a great comfort.
Along with this privilege, a serious responsibility goes with the thought of “thou . . . and thy house.” If the head of a household belongs to God, then his household belongs to God also. Accordingly, he is responsible to rule his house for God and to train the children for Him. They are to be brought up in the way of the Lord and commanded in the paths of righteousness in separation from the world. If evil is allowed in the household, God holds the head responsible for it.
Adapted from The Christian Home
by R. K. Campbell