Jamieson, Fausset & Brown

ALFORD thinks that Paul asks their prayers for his release as if it were the "only" way by which he could "make it (the Gospel) manifest" as he ought. But while this is included in their subject of prayer, Phi 1:12-13, written somewhat later in his imprisonment, clearly shows that "a door for the word" could be opened, and was opened, for its manifestation, even while he remained imprisoned (compare Ti2 2:9).