That the widow and orphans ought to be protected
In Solomon: “Be merciful to the orphans as a father, and as a husband to their mother; and you shall be the son of the Highest if you shall obey.” Also in Exodus: “You shall not afflict any widow and orphan. But if you afflict them, and they cry out and call unto me, I will hear their cryings, and will be angry in mind against you; and I will destroy you with the sword, and your wives shall be widows, and your children orphans.” Also in Isaiah: “Judge for the fatherless, and justify the widow; and come let us reason, says the Lord.” Also in Job: have preserved the poor man from the hand of the mighty, and I have helped the fatherless who had no helper: the mouth of the widow has blessed me. Also in the sixty-seventh Psalm: “The Father of the orphans, and the Judge of the widows.”
Source: The Treatises of Cyprian (New Advent)