Christ’s return is imminent, meaning it could happen at any moment, though the exact timing is unknown. Jesus and the apostles urged believers to live in constant readiness, as He will return just as He ascended (John 14:3; Acts 1:11). Because Christ could return at any time, we are called to trust in Him now, to live holy lives that reflect Him to others, and to share the gospel (2 Peter 3:9, 14; Matthew 28:19–20). Christ has not yet returned because His patience in returning allows more people to repent, but one day, the opportunity will end, so we must not delay in following Him and helping others do the same.
Imminence does not mean immediacy. It does not mean that it will happen right away. Instead, it means that it could happen at any moment. In light of Christ’s imminent return, we are to make sure we know Christ. If Christ will return at any moment, we cannot wait to believe; we are called to do so today. Second Peter 3:9 teaches, "The Lord is not slow to fulfill his promise as some count slowness, but is patient toward you, not wishing that any should perish, but that all should reach repentance." He has not returned yet, so many can continue turning to Him, but this will come to an end one day.
We are also called to live holy lives, in light of His imminent return. Second Peter 3:14 shares, "Therefore, beloved, since you are waiting for these, be diligent to be found by him without spot or blemish, and at peace." If a mother goes away for a few hours and tells her child to clean the house before she comes home, the right response is for the child to clean the house. Waiting until she is almost home or wasting time with video games and eating snacks is a foolish way of spending time. What if she returns sooner than expected?
Lastly, we are called to share Christ with others. The Great Commission calls us to make disciples of all nations: "Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, teaching them to observe all that I have commanded you. And behold, I am with you always, to the end of the age" (Matthew 28:19–20). The Bible both teaches that Jesus will return any time and instructs us regarding how to live as a result.