A few days before Jesus gave his life on the cross, his disciples asked, "What shall be the sign of thy coming, and of the end of the world?" (Matt. 24:3). Christ responded with the Olivet Discourse, a detailed teaching on the doctrine of the last things. We need to understand the signs of Christ's coming for our comfort as we look for "that blessed hope, and the glorious appearing of the great God and our Saviour Jesus Christ" (Titus 2:13). Christ had two concerns. First, his disciples must know the signs of his coming, which are footsteps of his approach. But Christ is not satisfied with mere "sign-gazing," which can lead to speculation and idle, foolish living. He did not give signs to satisfy our curiosities, but so that we will be ready for him when he returns. Therefore, Christ's second concern was the readiness of his disciples, which is expressed in his urgent and repeated warnings to watch for his coming in light of the signs. Watch, pray, and serve the Lord with an eye to the signs of his return!