When the gospel is proclaimed, it seems at first sight that two different, even alternative, responses are called for. Sometimes the summons is, “Repent!” Thus, “John the Baptist came preaching in the wilderness of Judea, ‘Repent for the kingdom of heaven is at hand’” (Matt. 3:1–2). Again, Peter urged the hearers whose consciences had been ripped open on the day of Pentecost, “Repent and be baptized every one of you in the name of Jesus Christ” (Acts 2:38). Later, Paul urged the Athenians to “repent” in response to the message of the risen Christ (Acts 17:30).
Yet, on other occasions, the appropriate response to the gospel is, “Believe!” When the Philippian jailer asked Paul what he must do to be saved, the Apostle told him, “Believe in the Lord Jesus, and you will be saved” (Acts 16:31).
But there is no mystery or contradiction here. Further on in Acts 17, we discover that precisely where the response of repentance was required, those who were converted are described as believing (Acts 17:30, 34).
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