And they said, Believe on the Lord Jesus Christ, and thou shalt be saved, and thy house. And they spake unto him the word of the Lord, and to all that were in his house. – Acts 16:31, 32

Heads of families, what responsibilities rest upon us! We cannot shake them off, let us do what we may! God has given us little kingdoms in which our authority and influence will tell for the better or the worse to all eternity. There is not a child or a servant in our house but what will be impressed for good or evil by what we do. True, we may have no wish to influence them, and we may endeavor to ignore our responsibility, but it cannot be done; parental influence is a throne which no man can abdicate. The members of our family come under our shadow, and we either drip poison upon them like the deadly upas tree, or else beneath our shade they breathe an atmosphere perfumed with our piety. The little boats are fastened to our larger vessel and are drawn along in our wake. O fathers and mothers, the ruin of your children or their salvation will, under God, very much depend upon you. The gracious Spirit may use you for their conversion, or Satan may employ you as the instruments of their destruction. Which is it like to be? I charge you, consider. It is a notable event in family history when the grace of God takes up its headquarters in the heart of the husband and the father: that household’s story will henceforth be written by another pen. Let those of us who are the Lord’s gratefully acknowledge His mercy to us personally, and then let us return to bless our household. If the clouds be full of rain they empty themselves upon the earth; let us pray to be as clouds of grace to our families. Whether we have only an Isaac and an Ishmael like Abraham, or twelve children like Jacob, let us pray for each and all that they may live before the Lord, and that we and all that belong to us may be bound up in the bundle of life. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/1236.cfm