William Burkitt on Philippians 4:23

He shuts up all with the usual apostolical valediction: by grace, we are to understand the free favour of God, as the fountain; and all good things, as so many streams flowing from that fountain; this is called the grace of our Lord Jesus Christ, because purchased by his merit, and applied by his intercession.

This grace he prays may be with them in the sweet effects of it, and in the sensible apprehensions of it, to enlighten, sanctify, comfort,and quicken them more and more: knowing then the exceeding riches of grace which we have in Christ Jesus our Lord, let us glorify him, eminently, abundantly; and as we have all things by him, let us do all things for him, and to his glory.