I. In view of what he had already undergone, and in anticipation of renewed suffering, St. Paul was "bold" in declaring in Thessalonica the whole counsel of God, keeping nothing back. He was all this, too, in the midst of "much contention" that is, much external conflict and danger from his Jewish and Gentile opponents, and also internal struggles. The secret of this boldness was his realising his message as the Gospel of God, good news from God Himself, a message from God. Hence, even in the presence of this world's potentates, as God's ambassador, "a legate of the skies," he was bold. He relied on his credentials. He was emboldened by the thought of the trust committed to him. Self-reliance is found in relying upon God.
II. "Our exhortation." There is much implied in the choice of this term to represent the apostolic ministry of the word. It means more than simple teaching. It is teaching tinged with emotion. The word thus suggested, as it is, of affectionate comfort and counsel, is specially adapted to the circumstances of the Thessalonian believers. The Apostle in the tenderness of his heart yearns over them in their dangers and trials. His sympathy breathes forth even from the very words he employs.
III. After disclaiming all wrong, corrupt elements in his "exhortation," the Apostle proceeds to describe positively the nature, the manner of his teaching. "But as we were allowed" i.e.,approved "of God, to be put in trust with the gospel, even so we speak." He claims for himself in these words a Divine commission. Not that he or any one can ever be chosen of God to salvation and honour because of ability to stand the test of Divine scrutiny. No: that scrutiny, that testing, can reveal nothing but unworthiness. Yet there is a sense in which God does scrutinise His own people, setting aside some and approving others for special work. There are those who, having been proved faithful in little, are exalted to higher posts of service, and also to greater exposure to danger. Thus it was with Paul; first proved, then approved, and so entrusted with the Gospel. The reward of past labour and suffering is simply renewed opportunity for labouring and suffering more.
J. Hutchison, Lectures on Thessalonians,p. 50.
References: 1 Thessalonians 2:4. R. Thomas, Christian World Pulpit,vol. viii., p. 33. 1 Thessalonians 2:5. Church of England Pulpit,vol. xviii., p. 193.