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2 Peter 3:11 (WEB)
Therefore, since all these things will be destroyed like this, what kind of people ought you to be in holy living and godliness,

Catechism · 2

§1042Article 12 · "I Believe in Life Everlasting"Read at vatican.va
“At that time, together with the human race, the universe itself, which is so closely related to man and which attains its destiny through him, will be perfectly re-established in Christ.” — Catechism footnote: LG 48; Cf. Acts 3:21; Eph 1:10; Col 1:20; 2 Pet 3:10-13.

§671Article 7 · "From Thence He Will Come Agaln to Judge the Living and the Dead"Read at vatican.va
“That is why Christians pray, above all in the Eucharist, to hasten Christ's return by saying to him:” — Catechism footnote: Cf. I Cor 11:26; 2 Pt 3:11-12.

Augustine of Hippo, The City of God XX.18Book XX
“Nevertheless we, according to His promise, look for new heavens and a new earth, wherein dwelleth righteousness.”” — editor's note: 2 Pet. iii. 3–13. The whole passage is quoted by Augustin.
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Augustine of Hippo, The City of God XX.24Book XX
“…the works which are in it shall be burned up and then adds, “Seeing, then, that all these things shall be dissolved, what manner of persons ought ye to be?”—these heavens which are to perish may be understood to be the same which he said were kept in store reserved for fire; and the elements which are to be burned…” — editor's note: 2 Pet. iii. 10, 11.
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