1 John 3:20

Moral Conscience

• §1781Article 6 · Moral ConscienceRead at vatican.va

  “We shall . . . reassure our hearts before him whenever our hearts condemn us; for God is greater than our hearts, and he knows everything.” — Catechism footnote: 1 Jn 3:19-20.

I Believe in God

• §208Paragraph 1 · I Believe in GodRead at vatican.va

  “The apostle John says likewise: "We shall. . . reassure our hearts before him whenever our hearts condemn us; for God is greater than our hearts, and he knows everything."” — Catechism footnote: I Jn 3:19-20

The Seven Petitions

• §2845Article 3 · The Seven PetitionsRead at vatican.va

  “It is lived out in prayer, above all in the Eucharist.” — Catechism footnote: Cf. Mt 5:23-24; 1 Jn 3:19-24.

Tertullian

• Tertullian, A Treatise on the Soul Chapter 15

  “…in me a clean heart, O God,” and Paul declares, “With the heart man believeth unto righteousness,” and John says, “By his own heart is each man condemned;” when, lastly, “he who looketh on a woman so as to lust after her, hath already committed adultery with her in his heart,”—then both points are cleared fully…” — editor's note: 1 John iii. 20.

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Augustine of Hippo

• Augustine of Hippo, Homilies on the First Epistle of John Homily 6

  “If ye remember, brethren, yesterday we closed our sermon at this sentence, which without doubt behooved and does behoove to abide in your heart, seeing it was the last ye heard.” — editor's note: 1 John iii. 18–20.

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Clement of Alexandria

• Clement of Alexandria, The Stromata, or Miscellanies Chapter 2

  “Ver.” — the author cites it

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• Exodus 3:5

  Cited together in Catechism §208.

• Exodus 3:6

  Cited together in Catechism §208.

• Psalm 139:23

  Cited together in A Treatise on the Soul Chapter 15.

• Proverbs 24:12

  Cited together in A Treatise on the Soul Chapter 15.

• Wisdom 1:6

  Cited together in A Treatise on the Soul Chapter 15.

• Isaiah 6:5

  Cited together in Catechism §208.

• Hosea 11:9

  Cited together in Catechism §208.

• Matthew 5:23

  Cited together in Catechism §2845.

• Matthew 5:24

  Cited together in Catechism §2845.

• Matthew 18:21

  Cited together in Catechism §2845.

• Matthew 18:22

  Cited together in Catechism §2845.

• Luke 5:8

  Cited together in Catechism §208.

• Luke 17:3

  Cited together in Catechism §2845.

• Luke 17:4

  Cited together in Catechism §2845.