The Philippians were stripping themselves for Paul, but his heart was so simple that he could accept it all, saying, " My God shall supply all your need." He could not refuse their last bit of bread, because he knew that his God would supply them.
It requires the mind of Christ to accept what one does not require, because given for His sake. I once declined taking something from a poor widow; I was not up to the mark. She wanted the gospel preached, and came up to help with her two mites: and one ought to take care not to refuse any the blessed privilege of identifying themselves with the work and interests of the Lord.
God does care to supply all your need, but He has a plan of His own, a plan in which He has everything to satisfy the heart to overflowing. He will supply all the present need of His people, and then give them riches in glory by Christ Jesus for evermore.