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Psalm 34:3 (WEB)
Oh magnify the LORD with me. Let’s exalt his name together.

Catechism · 1

§716Article 8 · "I Believe in the Holy Spirit"Read at vatican.va
“The People of the "poor"” — Catechism footnote: Cf. Zeph 2:3; Pss 22:27; 34:3; Isa 49:13; 61:1; etc.

Cyril of Jerusalem, Catechetical Lectures Lecture 7
“Therefore magnify the Lord with me, and let us exalt His Name together,—all of us in common, for one alone is powerless; nay rather, even if we be all united together, we shall yet not do it as we ought.” — editor's note: Ps. xxxiv. 3.
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Cyril of Jerusalem, Catechetical Lectures Lecture 24
“…Virtues, Dominions, Principalities, Powers, Thrones; of the Cherubim with many faces: in effect repeating that call of David’s Magnify the Lord with me.” — editor's note: Ps. xxxiv. 3.
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Augustine of Hippo, Expositions on the Psalms Psalm 34
“Now followeth, “O magnify the Lord with me” (ver. 3).” — the author cites it
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Augustine of Hippo, Sermons on New Testament Lessons Sermon 53
“Therefore, “Magnify the Lord with me, and let us exalt His Name in one together.”” — editor's note: Ps. xxxiv. 3.
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Leo the Great, Sermons Sermon 2
“Therefore, dearly-beloved, “magnify the Lord with me and let us exalt His name together,” that the whole reason of to-day’s concourse may be referred to the praise of Him Who brought it to pass.” — editor's note: Ps. xxxiv. 3.
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