What does the Bible say about waiting for Christ's return?

In 1 Thessalonians 5, the Apostle Paul encourages believers to await the return of Christ, assuring them that they are not in darkness and should not be caught off guard by His coming. He reminds them that the day of the Lord will come suddenly, like labor pains upon a pregnant woman. Because believers have been called out of darkness into light, they should live in a state of readiness, actively encouraging and edifying one another while anticipating their Savior’s return. This waiting is a vital aspect of Christian life, emphasizing hope and assurance in salvation.