The disciples witnessed Jesus ascending into heaven, and they could not help but gaze at the sky in awe and wonder. However, an angel appeared and told them not to keep looking up at the sky. The angel’s question, “Why do you look up at the sky?” suggested some important lessons for the disciples and…

1. Witnesses should not rely on the times. It cannot necessarily be said that the apostles asked Jesus about the restoration of Israel out of opportunism or fatalism. However, Jesus warned them that they might fall into such a tendency. Christianity rejects opportunism. In 2 Timothy 4:2, he said, “Preach the word; be ready in…