But know that the LORD has set apart him that is godly for himself: the LORD will hear when I call unto him.
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Augustine of Hippo
4. "And know ye that the Lord hath magnified his Holy One" (ver. 3). Whom but Him, whom He raised up from below, and placed in heaven at His right hand? Therefore doth he chide mankind, that they would turn at length from the love of this world to Him. But if the addition of the conjunction (for he says, "and know ye") is to any a difficulty, he may easily observe in Scripture that this manner of speech is usual in that language, in which the Prophets spoke. For you often find this beginning, "And" the Lord said unto him, "And" the word of the Lord came to him. Which joining by a conjunction, when no sentence has gone before, to which the following one may be annexed, peradventure admirably conveys to us, that the utterance of the truth in words is connected with that vision which goes on in the heart. Although in this place it may be said, that the former sentence, "Why do ye love vanity, and seek a lie?" is as if it were written, Do not love vanity, and seek a lie. And being thus rea...
Wonderful, (mirificavit) according to the Hebrew means also has chosen in a striking manner his appointed ruler, or holy person. (Berthier)
Holy, often means one set aside, (Luke ii.) or commissioned, though the person be a pagan, Isaias xiii. 3. Chasid, (Haydock) particularly signifies a "clement "character, such as a king ought to be. (Calmet)
"The Lord has set aside for himself the pious. "(Pagnin)
I am ready to pardon you, but know that if you continue rebellious, you go against the ordinance of heaven. (Haydock)