Catena Fidei

Acts 2:34 (WEB)
For David didn’t ascend into the heavens, but he says himself, ‘The Lord said to my Lord, “Sit by my right hand

Catechism · 3

§447Article 2 · "And in Jesus Christ, His Only Son, Our Lord"Read at vatican.va
“Jesus ascribes this title to himself in a veiled way when he disputes with the Pharisees about the meaning of Psalm 110, but also in an explicit way when he addresses his apostles.” — Catechism footnote: Cf. Mt 22:41-46; cf. Acts 2:34-36; Heb 1:13; Jn 13:13.
§449Article 2 · "And in Jesus Christ, His Only Son, Our Lord"Read at vatican.va
“By attributing to Jesus the divine title "Lord", the first confessions of the Church's faith affirm from the beginning that the power, honour and glory due to God the Father are due also to Jesus, because "he was in the form of God",” — Catechism footnote: Cf. Acts 2:34 - 36; Rom 9:5; Titus 2:13; Rev 5:13; Phil 2:6.

§731Article 8 · "I Believe in the Holy Spirit"Read at vatican.va
“On the day of Pentecost when the seven weeks of Easter had come to an end, Christ's Passover is fulfilled in the outpouring of the Holy Spirit, manifested, given, and communicated as a divine person: of his fullness, Christ, the Lord, pours out the Spirit in abundance.” — Catechism footnote: Cf. Acts 2:33-36.

Irenaeus of Lyons, Against Heresies III.12Book III
“Therefore let all the house of Israel know assuredly, that God hath made that same Jesus, whom ye have crucified, both Lord and Christ.”” — editor's note: Acts ii. 30–37.
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Cyril of Jerusalem, Catechetical Lectures Lecture 15
“And in the Acts of the Apostles, Peter on the day of Pentecost standing with the Eleven, and discoursing to the Israelites, has in very words cited this testimony from the hundred and ninth Psalm.” — editor's note: Acts ii. 34.
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Theodoret of Cyrus, Dialogues (Eranistes) §3
“…glory as man, as the Apostles say ‘for David is not ascended into the heavens, but he saith himself the Lord said unto my Lord sit thou on my right hand.’” — editor's note: Acts ii. 34
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Hippolytus of Rome, Fragments of Discourses or Homilies §5
“And at Pentecost so as to presignify the kingdom of heaven as He Himself first ascended to heaven and brought man as a gift to God.” — editor's note: [Man’s nature was never before in heaven. John iii. 13; Acts ii. 34.]
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John Chrysostom, Homilies on Matthew Homily 7
“And the testimony too, which was produced after the ascension, manifests His equality with the Father; thus saying, “The Lord said unto my Lord, Sit Thou on my right hand.”” — editor's note: Ps. cx. 1; Acts ii. 34.
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