The Catechism in Questions & Answers

196. What references to the return of Christ do we find in the New Testament?

The New Testament, and in particular the letters of the Apostles, reinforce the promise of the return of Christ. The Apostle concludes his first letter to the congregation in Corinth with the greeting: “O Lord, come!” (cf. 1 Corinthians 16: 22).
Apostle James calls for patience until the coming of the Lord, “for the coming of the Lord is at hand” (James 5: 8). The letter to the Hebrews also admonishes patience: “For yet a little while, and He who is coming will come and will not tarry” (Hebrews 10: 37).
The second epistle of Peter (cf. 2 Peter 3: 9) is addressed to all who would deny that Jesus is coming again. This letter rules out even the possibility that the fulfilment of the promise of His return is being delayed.