1 Samuel 12:7 Now therefore stand still, that I may reason with you before the Lord of all the righteous acts of the Lord, which he did to you and to your fathers.
Samuel had gathered the people together for the thankful response of worship, to introduce the new king, and to announce his retirement. Then he began to rehearse before them all the righteous acts of salvation by the Lord for them from the days of Moses through the Judges to this day. The response of reasoning with them was to proclaim the gospel history of Salvation, for the purpose of instilling faith and increasing the level of loyal commitment. With the installation of a king Israel was opening a new chapter, and Samuel wanted to re-encourage them to renew their faith and faithfulness.
For this same reason we need to rehearse the history, retell the story, remind of the Gospel, and remember the righteous acts of salvation. This is why the Christian Church has installed the practice of public worship every Lord’s Day. The preacher reasons with us proclaiming what great things the Lord has done for in Christ. This Gospel reminds us to renew the kingdom within the heart. The Gospel is a reasonable account of the story of Jesus, inspiring us to faith and good works.