The heart of evangelism is the gospel, “for it is the power of God for salvation to everyone who believes” (Romans 1:16). If a child is to repent and believe in Christ, then it will be through the proclamation of the message of the cross (1 Corinthians 1:18–25; 2 Timothy 3:15; James 1:18; 1 Peter 1:23–25). Children will not be saved apart from the gospel.
For this reason, parents need to teach their children the law of God, teach them the gospel of divine grace, show them their need for a Savior, and point them to Jesus Christ as the only One who can save them. It is best to start from the beginning—God, creation, the fall, sin, salvation, and Christ in His life, death, and resurrection.
As they teach their children, parents must resist the temptation to downplay or soften the demands of the gospel and must proclaim the message in its fullness. For example, the need to surrender to the lordship of Christ is not too difficult for children to understand. Any child who is old enough to understand the essential gospel is also able, by God’s grace, to trust Him completely and respond with the purest, most sincere kind of repentance.
The key is to be clear and thorough. Parents, more than anyone, have ample time and opportunity to explain and illustrate gospel truths, correct misunderstandings, and clarify and review the most challenging aspects of the message. The wise parent will be faithful, patient, and persistent, being careful to look at every moment of the child’s life as a teaching opportunity (Deuteronomy 6:6–7).
One such teaching opportunity is found in the parents’ responsibility to discipline and correct their children when they are disobedient (Ephesians 6:4). Rather than seeking simply to modify behavior, the wise parent will look at discipline as an opportunity to help his children become aware of their failure and inability to obey, and subsequently, their need for forgiveness in Christ. In this way, discipline and correction are used to bring children to a sober assessment of themselves as sinners and to lead to the cross of Christ, where sinners can be forgiven.
As parents explain the gospel and exhort their children to respond to the Gospel, it is best to avoid an emphasis on external actions, such as praying “the sinner’s prayer.” There is an urgency inherent in the gospel message itself—and it is right for parents to impress that urgency on the child’s heart—but the focus should be kept on the internal response Scripture calls for from sinners: repentance from sin and faith in Christ. As parents diligently teach the gospel and take opportunities daily to instruct their children in the truth of God’s Word, they can begin to look for signs that their children have indeed repented and believed.