Philipper 4:13

I can do all things - It was not a habit which he had acquired by frequent exercise, it was a disposition which he had by grace; and he was enabled to do all by the power of an indwelling Christ. Through Him who strengtheneth me is the reading of some of the best MSS., versions, and fathers; the word Χριστῳ, Christ, being omitted.

I can do all things--Greek, "I have strength for all things"; not merely "how to be abased and how to abound." After special instances he declares his universal power--how triumphantly, yet how humbly! [MEYER]. through Christ which strengtheneth me--The oldest manuscripts omit "Christ"; then translate, "In Him who giveth me power," that is, by virtue of my living union and identification with Him, who is my strength (Gal 2:20). Compare Ti1 1:12, whence probably, "Christ" was inserted here by transcribers.

I can do all things,.... Which must not be understood in the greatest latitude, and without any limitation; for the apostle was not omnipotent, either in himself, or by the power of Christ; nor could he do all things that Christ could do; but it must be restrained to the subject matter treated of: the sense is, that he could be content in every state, and could know how to behave himself in adversity and prosperity, amidst both poverty and plenty; yea, it may be extended to all the duties incumbent on him both as a Christian and as an apostle, as to exercise a conscience void of offence towards God and men; to take the care of all the churches; to labour more abundantly than others in preaching the Gospel; and to bear all afflictions, reproaches, and persecutions for the sake of it; yea, he could willingly and cheerfully endure the most cruel and torturing death for the sake of Christ: all these things he could do, not in his own strength, for no man was more conscious of his own weakness than he was, or knew more of the impotency of human nature; and therefore always directed others to be strong in the Lord, and in, the power of his might, and in the grace that is in Christ, on which he himself always depended, and by which he did what he did; as he adds here, through Christ which strengtheneth me. The Vulgate Latin and Ethiopic versions leave out the word "Christ", and only read "him"; and so the Alexandrian copy and others; but intend Christ as those that express it: strength to perform duty and to bear sufferings is in Christ, and which he communicates to his people; he strengthens them with strength in their souls, internally, as the word here used signifies; by virtue of which they can do whatever he enjoins them or calls them to, though without him they can do no…

Exhortations to several Christian duties, as stedfastness, unanimity, joy, etc. (Phi 4:1-9). The apostle's grateful acknowledgments of the Philippians' kindness to him, with expressions of his own content, and desire of their good (Phi 4:10-19). He concludes the epistle with praise, salutations, and blessing (Phi 4:20-23).

4:13 through Christ: With Christ’s help, Paul had the strength to do everything. In everything, especially while enduring suffering, Paul relied on the strength of Christ, who lived in him and worked through him (see 2 Cor 1:8-10; 4:7-12; 12:8-10; Gal 2:20; Col 1:27).