1 Which [God] the Lord does not reject, nor does He say that the prophets [spoke] from another god than His Father; nor from any other essence, but from one and the same Father; nor that any other being made the things in the world, except His own Father, when He speaks as follows in His teaching: “There was a certain householder, and he planted a vineyard, and hedged it round about, and dug in it a winepress, and built a tower, and let it out to husbandmen, and went into a far country: And when the time of the fruit drew near, he sent his servants unto the husbandmen, that they might receive the fruits of it.
And the husbandmen took his servants: they cut one to pieces, stoned another, and killed another. Again he sent other servants more than the first: and they did unto them likewise. But last of all he sent unto them his only son, saying, Perchance they will reverence my son. But when the husbandmen saw the son, they said among themselves, This is the heir; come, let us kill him, and we shall possess his inheritance. And they caught him, and cast him out of the vineyard, and slew him.
When, therefore, the lord of the vineyard shall come, what will he do unto these husbandmen? They say unto him, He will miserably destroy these wicked men, and will let out his vineyard to other husbandmen, who shall render him the fruits in their season.” Again does the Lord say: “Have you never read, The stone which the builders rejected, the same has become the head of the corner: this is the Lord's doing, and it is marvellous in our eyes? Therefore I say unto you, that the kingdom of God shall be taken from you, and given to a nation bringing forth the fruits thereof.” By these words He clearly points out to His disciples one and the same Householder— that is, one God the Father, who made all things by Himself; while [He shows] that there are various husbandmen, some obstinate, and proud, and worthless, and slayers of the Lord, but others who render Him, with all obedience, the fruits in their seasons; and that it is the same Householder who sends at one time His servants, at another His Son.
From that Father, therefore, from whom the Son was sent to those husbandmen who slew Him, from Him also were the servants [sent]. But the Son, as coming from the Father with supreme authority (principali auctoritate), used to express Himself thus: “But I say unto you.” The servants, again, [who came] as from their Lord, spoke after the manner of servants, [delivering a message]; and they therefore used to say, “Thus says the Lord.”
Source: Adversus haereses (New Advent)