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Psalm 143:10 (WEB)
Teach me to do your will, for you are my God. Your Spirit is good. Lead me in the land of uprightness.

Catechism · 1

§1831Article 7 · The VirtuesRead at vatican.va
“Let your good spirit lead me on a level path.” — Catechism footnote: PS 143:10.

Gregory of Nyssa, Against Eunomius II.15Book II
“This the Father and the Son likewise do: for “He leadeth Joseph like a sheep,” and, “led His people like sheep,” and, “the good Spirit leadeth us in a land of righteousness.”” — editor's note: Cf. Ps. cxliii. 10.
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Gregory of Nyssa, On the Faith
“…the good which is above it, while the Holy Spirit needs not any to make Him good (seeing that He is good by virtue of His nature, as the Scripture testifies); that the creation is guided by the Spirit, while the Spirit gives guidance; that the creation is governed, while the Spirit governs; that the creation is…” — editor's note: The reference may be to Ps. cxliii. 10.
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John Cassian, Conferences I–X III.14Conference III
“…Thou mine eyes: and I shall see the wondrous things of Thy law:” and “teach me to do Thy will, for Thou art my God;” and again: “Who teacheth man knowledge.”” — editor's note: Ps. xxiv. (xxv.) 4; cxviii. (cxix.) 18; cxlii. (cxliii.) 10; xciii. (xciv.) 10.
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Augustine of Hippo, Confessions XII.32Book XII
“…God, and not flesh and blood, if man doth see anything less, can anything lie hid from “Thy good Spirit,” who shall “lead me into the land of uprightness,” which Thou Thyself, by those words, wert about to reveal to future readers, although he through whom they were spoken, amid the many interpretations that might…” — editor's note: Ps. cxliii. 10.
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Augustine of Hippo, Expositions on the Psalms Psalm 119
“Teach me to work them: as it is more plainly expressed elsewhere, “Teach me to do Thy will.”” — editor's note: Ps. cxliii. 10.
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Augustine of Hippo, Expositions on the Psalms Psalm 143
““Teach me to do Thy will, for Thou art my God” (ver. 10).” — the author cites it
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Ambrose of Milan, On the Holy Spirit I.5Book I
“And if they ask for statements since they do not deny facts, let them hear that the Holy Spirit is good, for David said: “Let Thy good Spirit lead me forth in the right way.”” — editor's note: Ps. cxliii. [cxlii.] 10.
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Ambrose of Milan, On the Holy Spirit III.14Book III
“And David says of Him: “Thy good Spirit shall lead me into the right way.”” — editor's note: Ps. cxliii. [cxlii.] 10.
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