Matthew Poole and continuators on Philippians 2:18

18 For the same cause also do ye joy , and rejoyce with me .

Expecting the like affection and sympathy in every one of them, that upon the account of his sufferings, they would the more readily, cheerfully, and couragiously believe in, and suffer for Christ. Considering the difference 'twixt death threatned by Man, for our sticking close to God, Mat. 10.28. and denounced for slipping aside from God, in whole, or in part, 2 Thess. 1.5.

And that would be a congratulation of him who should account their being established in the Faith with mutual love and unity, a fulfilling of his Faith as before, v. 2.