Matthew Poole and continuators on Philippians 4:9

9 Those things which ye have both learned , and received, and heard , and seen in me , do : and the God of peace shall be with you .

He recommends to their serious practice not new things, but those weighty matters which they had before learned of him, when preaching amongst them.

Yea and approv'd as worthy to be kept.

And that all things might be more lively and affecting with an increase of words, he moves with this that his doctrine was exemplified by his own practice when amongst them as he had hinted before, c. 3.17.) expressing the same thing by his life, which he did by his word, 1 Tim. 4.12. 1 Pet. 5.3.

Whereupon he would have them to be doers also of the same things, 1 Thess. 1.6. & 2.13. Heb. 13.8. Iam. 1.22.

And in this practice you have comfort from the presence of the God of peace (as above, v. 7.) who will embrace and prosper you; being reconciled to you in Christ, and at peace with you, so Rom. 15.5, 33. & 16.20. 2 Cor. 13.11. 1 Thess. 5.23.