Psalms 49:9

1. Moreover, the prophets indicate in the fullest manner that God stood in no need of their slavish obedience, but that it was upon their own account that He enjoined certain observances in the law. And again, that God needed not their oblation, but [merely demanded it], on account of man himself who offers it, the Lord taught distinctly, as I have pointed out. For when He perceived them neglecting righteousness, and abstaining from the love of God, and imagining that God was to be propitiated by sacrifices and the other typical observances, Samuel did even thus speak to them: “God does not desire whole burnt-offerings and sacrifices, but He will have His voice to be hearkened to. …

7. It would, however, take too long to discuss with adequate fulness the differences between the symbolical actions of former and present times, which, because of their pertaining to divine things, are called sacraments. For as the man is not fickle who does one thing in the morning and another in the evening, one thing this month and another in the next, one thing this year and another next year, so there is no variableness with God, though in the former period of the world’s history He enjoined one kind of offerings, and in the latter period another, therein ordering the symbolical actions pertaining to the blessed doctrine of true religion in harmony with the changes of successive epochs without any change in Himself. …

15. What He requireth of man, let us see; what tribute our God, our Emperor and our King doth enjoin us; since He hath willed to be our King, and hath willed us to be His province? Let us hear His injunctions. Let not a poor man tremble beneath the injunction of God: what God enjoineth to be given to Himself, He doth Himself first give that enjoineth: be ye only devoted. God doth not exact what He hath not given, and to all men hath given what He doth exact. For what doth He exact? Let us hear now: “I will not reprove thee because of thy sacrifices” ( ver. 8 ). I will not say to thee, Wherefore hast thou not slain for me a fat bull? why hast thou not selected the best he-goat from thy flock? Wherefore doth that ram amble among thy sheep, and is not laid upon mine altar? I will not say, Examine thy fields and thy pen and thy walls, seeking what thou mayest give Me. …

But to His disciples not so, but He puts them in mind of His signs, saying on this wise, “Do ye not yet remember the five loaves of the five thousand, and how many baskets ye took up?” Not so however with these, but He reminds them of our common infirmity, and signifies them at any rate to be of the number of the infirm; who did not so much as know the Scriptures, but making light of the rest of virtue, laid all the stress on their sacrifices; which thing He is also earnestly intimating unto them, when He sets down in brief what had been affirmed by all the prophets,saying, “Learn ye what that meaneth, I will have mercy, and not sacrifice.”

The lamb bleated as it was offered before the First-born. It praised the Lamb, that had come to set free the flocks and the oxen from sacrifices: yea that Paschal Lamb, Who handed down and brought in the Passover of the Son.