The apostle tells us that he rejoices even though he is suffering, because of what those sufferings are accomplishing among the people of God. He weighs all that happens to him, the purpose behind everything and the accomplishments which come about, and that leads to his rejoicing.
The Christian life leads to rejection and to difficulty if it is really lived for Christ. And alongside that there are trials allowed to us by the Lord, and we are having to learn to sacrifice for him and to labour for him. There are many lessons, in dependence and faith. We are left short sometimes, in great need one way or another in order that we trust him and pray to him and prove him. We are being led down a pathway which means the forsaking of ease. The middle-class comfortable Christian, who knows no great stresses and rejection; he or she expends no great effort for the Lord, expends no real witness, and everything goes calmly and smoothly. No training from God, no opposition from the enemy of souls. But that is not the experience of Paul. ‘Who now rejoice in my sufferings for you.’
Now we are taught in the Scripture that what one member of the body suffers they all suffer. And the head similarly suffers. A pain in the limb is suffered in the mind, in the body, the whole body. And so it is with the church. And if we suffer for Christ’s sake, Christ shares our suffering and identifies with us. We are partners with him. What a privilege to be a partner with Christ and a sharer, a partaker of his earthly sufferings of rejection and repudiation.