"Rejoice in the Lord always." Certainly it could not be in circumstances, for he was a prisoner. Christians are often a great deal happier in the trial than they are in thinking of it; for there the stability, the certainty, the nearness, and the power of Christ are much more learnt, and they are happier. Paul could not so well have said, "Rejoice in the Lord always," if he had not known what it was to be a prisoner. Just as in Psalm xxxiv:"I will bless Jehovah at all times; His praise shall continually be in my mouth." Why? "This poor man cried, and Jehovah heard him, and delivered him out of all his troubles."