"I can do all things through Christ who strengthens me."
Often, this short verse is quoted on magnets, posters or bookmarks without regard to its context. Many times people take this to mean that they can accomplish tasks with Christ's help. While certainly great tasks have been achieved by God's working through people, that is not the Apostle Paul's main point. His intention is more important and contains a better encouragement.
This brief verse is set between Paul's affirmation of the Philippians' renewed concern for him and his commitment to the gospel no matter the circumstances. Consider these phrases which Paul uses in the surrounding context. Immediately before, the Apostle says:
In any and every circumstance I have learned the secret of being filled and going hungry, both of having abundance and suffering need. (Philippians 4:12)
And then Paul says: I can do all things through Christ who strengthens me. In other words, whatever happens, I can live with it because Christ is the one who delivers spiritual strength.
Paul's intention is to assure his readers that he had no anxiety regarding his situation. God's provision of supply and endurance was all he needed to continue preaching the gospel, no matter the circumstances.
People often think that they only have God's "blessing" if they are living the good life—if they're living "high off the hog." The Apostle helps us see that being truly blessed is to trust in the Lord, whether in want or in plenty. The Christian can do all those things, live in either extreme with contentment and trust, because Christ himself gives us the strength!
Achieving great tasks can be challenging and require great strength, but trusting God no matter the situation requires even greater strength. I can do all things through Him who strengthens me!