What does the Bible say about confirming the souls of disciples?

In Acts 14:21-22, we see that Paul and Barnabas return to the cities they evangelized to confirm the souls of the disciples. This confirmation involves teaching and exhortation to ensure that the believers continue in their faith. The apostles recognized the need to assist believers in their spiritual journey, reinforcing the truth of the gospel in their hearts, which is vital for sustaining faith amid tribulation. The act of confirming souls is an affirmation of their commitment to Christ and an encouragement to uphold the teachings of Scripture during trials.