The word for "strengthen" (=endynamoun=) means literally "to infuse power into" a person. It is one of which the Apostle is rather fond; and outside his writings it occurs in the New Testament only in the Acts and in Hebrews, once in each (Rom. iv. 20; Eph. vi. 10; Phil. iv. 13; 1 Tim. i. 12; 2 Tim. ii. 1). It is worth while to compare the passage in which he speaks to Timothy of Christ having given him power to turn to Him and become His servant; and still more the passage in which, during his first Roman imprisonment, he tells the Philippians "I can do all things in Him that strengthened me." The same thing was true in the second imprisonment.
The special purpose for which Christ stood by His Apostle and put strength and power into him is stated. "That through me the message might be fully proclaimed, and that all the Gentiles might hear." Those who follow Eusebius in the mistake of supposing that the "first defence" refers to the trial which ended in St. Paul's release after the first imprisonment, understand this proclamation of the message to the Gentiles as referring to the missionary work which St. Paul was enabled to do during the few years of interval (c. A.D. 63-66) before he was again arrested. But if the proclamation of the message took place in consequence of the Apostle's release, then it would have been placed after, and not before, the mention of deliverance out of the mouth of the lion. It is not said that he was _delivered_ in order that through him the message might be proclaimed, but that he was _strengthened_ in order that it might be proclaimed. And the special strengthening by Christ took place in reference to the first hearing of the case in court, when all human friends forsook him, while Christ stood by him. It was in court, therefore, that the proclamation of the message was made, and that through the instrumentality of the Apostle the preaching of the Gospel reached its culmination (=to kêrygma plêrophorêthê=). This was the climax;--that in the metropolis of the world, in open court, before the imperial tribunal, the Gospel proclamation should be made with all solemnity and power. It is quite possible that this event, which the Apostle of the Gentiles regards as the completing act of his own mission and ministry, took place in the forum itself. Here Tiberius had caused a tribunal to be erected for causes which he had to hear as Emperor. But Claudius sometimes heard such cases elsewhere; and his successors probably followed his example. So that in the reign of Nero we cannot be certain that such a case as St. Paul's would be heard in the forum. But at any rate it would be held in a court to which the public had access; and the Roman public at this time was the most representative in the world. The Apostle is fully justified, therefore, in the language which he uses. This opportunity and power were granted "in order that through me the message might be fully proclaimed, and _that all the Gentiles might hear_." In that representative city and before that representative audience he preached Christ; and through those who were present and heard him the fact would be made known throughout the civilized world that in the imperial city and before the imperial bench the Apostle of Christ had proclaimed the coming of His Kingdom.
And the result of it was that he was "delivered out of the mouth of the lion." This was a second consequence of the Lord's standing by him and strengthening him. He was enabled to speak with such effect, that the sentence of condemnation, which had been feared, was for the present averted. He was neither acquitted nor convicted; but the court, being unable to arrive at a satisfactory decision, granted an extension of time (_ampliatio_); that is an adjournment. In technical phraseology the _actio prima_ ended in a verdict of _non liquet_, and an _actio secunda_ became necessary; and as this second trial might have a similar result, the amount of delay that was possible was almost boundless.