That every person ought to have care rather of his own people, and especially of believers
The apostle in his first Epistle to Timothy: “But if any take not care of his own, and especially of those of his own household, he denies the faith, and is worse than an infidel.” Of this same thing in Isaiah: “If you shall see the naked, clothe him; and despise not those who are of the household of your own seed.” Of which members of the household it is said in the Gospel: “If they have called the master of the house Beelzebub, how much rather them of his household!”
Source: The Treatises of Cyprian (New Advent)