Happy shall he be, that takes and dashes your little ones against the stones.
Read Chapter 137
Augustine of Hippo
AD 430
12. "Happy shall he be that repayeth thee, as thou hast served us." What repayment meaneth he? Herewith the Psalm closeth, "Happy, that taketh and dasheth thy little ones against the rock" (ver. 9). Her he calleth unhappy, but him happy who payeth her as she hath served us. Do we ask, what reward? This is the repayment. For what hath that Babylon done to us? We have already sung in another Psalm, "The words of the wicked have prevailed against us." For when we were born, the confusion of this world found us, and choked us while yet infants with the empty notions of divers errors. The infant that is born destined to be a citizen of Jerusalem, and in God's predestination already a citizen, but meanwhile a prisoner for a time, when learneth he to love ought, save what his parents have whispered into his ears? They teach him and train him in avarice, robbery, daily lying, the worship of divers idols and devils, the unlawful remedies of enchantments and amulets. What shall one yet an infant do, a tender soul, observing what its elders do, save follow that which it seeth them doing. Babylon then has persecuted us when little, but God hath given us when grown up knowledge of ourselves, that we should not follow the errors of our parents. ...How shall they repay her? As she hath served us. Let her little ones be choked in turn: yea let her little ones in turn be dashed, and die. What are the little ones of Babylon? Evil desires at their birth. For there are, who have to fight with inveterate lusts. When lust is born, before evil habit giveth it strength against thee, when lust is little, by no means let it gain the strength of evil habit; when it is little, dash it. But thou fearest, lest though dashed it die not; "Dash it against the Rock; and that Rock is Christ."
13. Brethren, let not your instruments of music rest in your work: sing one to another songs of Sion. Readily have ye heard; the more readily do what ye have heard, if ye wish not to be willows of Babylon fed by its streams, and bringing no fruit. But sigh for the everlasting Jerusalem: whither your hope goeth before, let your life follow; there we shall be with Christ. Christ now is our Head; now He ruleth us from above; in that city He will fold us to Himself; we shall be equal to the Angels of God. We should not dare to imagine this of ourselves, did not the Truth promise it. This then desire, brethren, this day and night think on. Howsoever the world shine happily on you, presume not, parley not willingly with your lusts. Is it a grown-up enemy? let it be slain upon the Rock. Is it a little enemy? let it be dashed against the Rock. Slay the grown-up ones on the Rock, and dash the little ones against the Rock. Let the Rock conquer. Be built upon the Rock, if ye desire not to be swept away either by the stream, or the winds, or the rain. If ye wish to be armed against temptations in this world, let longing for the everlasting Jerusalem grow and be strengthened in your hearts. Your captivity will pass away, your happiness will come; the last enemy shall be destroyed, and we shall triumph with our King, without death.