In Phil 4:11-12, Paul says he has learned the secret of contentment in any and every circumstance. The “secret” of this contentment is a mystery to the world for they do not know the source of such contentment. We learn this secret as we are discipled by God to trust Him in the various experiences of life in this fallen world. This contentment is not the passionless contentment of the stoic but the confidence that, in every situation, God’s grace is sufficient.