Apologetics is a necessary discipline for the Christian faith. Jesus and the apostle Paul regularly defended their beliefs through rational arguments. The apostle Peter tells us to be ready to give a reason for the hope we have in Christ (1 Pet. 3:15). This lost world needs to hear and believe the gospel of God, so, when unbelievers ask questions about the truth and rationality of Christianity, we must be ready with sufficient answers, trusting in the Holy Spirit to apply the message to their souls (Acts 1:8). - Douglas Groothuis