Utterances of the Father
And that this too may be clear to you, there were spoken from the person of the Father through Isaiah the prophet, the following words: “The ox knows his owner, and the ass his master's crib; but Israel does not know, and My people has not understood. Woe, sinful nation, a people full of sins, a wicked seed, children that are transgressors, you have forsaken the Lord.” And again elsewhere, when the same prophet speaks in like manner from the person of the Father, “What is the house that you will build for Me?
Says the Lord. The heaven is My throne, and the earth is My footstool.” And again, in another place, “Your new moons and your sabbaths My soul hates; and the great day of the fast and of ceasing from labour I cannot away with; nor, if you come to be seen of Me, will I hear you: your hands are full of blood; and if you bring fine flour, incense, it is abomination unto Me: the fat of lambs and the blood of bulls I do not desire. For who has required this at your hands? But loose every bond of wickedness, tear asunder the tight knots of violent contracts, cover the houseless and naked, deal your bread to the hungry.” What kind of things are taught through the prophets from [the person of] God, you can now perceive.
Source: First Apology (New Advent)