In that case, “exhorting,” παρακαλουντες, will mean persuading, urging, acting upon the mind. “Comforting,” παραμυθουμενοι, means awakening sympathy, disposing them to love the new way of life as God-pleasing and saving, acting upon the feeling and the heart. “Testifying,” μαρτυρομενοι, means binding and adjuring them by testimonies of Scripture, by the words of the living God, bringing the will to an inspired resolve for a new way of life, with readiness for every sacrifice for its sake.
But if one considers their subject, namely, walking worthily of God, then in each of these words one may see an indication of distinct aspects of a walk worthy of God. In that case, “exhorting,” παρακαλουντες, will mean imploring and persuading them to accept the faith and keep it. “Comforting,” παραμυθουμενοι, means consoling them in the afflictions that existed and inspiring them to meet manfully those that were to come. “Testifying,” μαρτυρομενοι, means binding and adjuring them on behalf of God to live according to the Gospel.
“To walk worthily of God,” or worthily of the Gospel (Phil 1:27; compare Rom 16:2; 3 Jn 6), or worthily of the calling (Eph 4:1), means generally in all pleasing of God and in every good work (Col 1:10). Thus should those walk who have received new life (1 Pet 1:23; Rom 6:11 and following), and who are children of light (Eph 5:8).
This is the chief task and goal for those who have believed in the Lord. Faith does not do everything. It gives entrance into the Kingdom of Christ, the Church. The one who has entered has the chief duty to walk as befits the sons of the Kingdom. As is evident, the Apostles directed strict attention to this.
“Who calls you into His Kingdom and glory.” The Kingdom and glory will be revealed after the resurrection (Rom 8:17), yet the Thessalonians are already called into them. For the goal of the whole ordering of salvation, or of all the means of grace, lies there. By faith and grace they are appointed to inherit the eternal Kingdom and glory. Or, otherwise, they are called into the Kingdom of grace in order to inherit the Kingdom of glory, if the conditions for receiving this inheritance are preserved. These are all contained in one phrase: to walk worthily of God.
They have been called into the Kingdom, to be under royal authority, so that afterward they may also share in the reign. Those who are unquestionably obedient to the Lord’s will here will reign with Him there.
In the future the glory of restored human nature will be revealed. But as here it is purified by the power of God, so there it will be glorified by the glory of God. In everything the glory of God will shine. Into this glory believing Christians have been called.
Thus this section too concludes by transferring attention to the future life, as did the first (1 Thess 1:10). So strongly was the Apostle occupied with that thought, and so strong a support for Christian character in Christians did he see in it.