Paul fulfilled this in deed and said, "I think that God has displayed us, the last apostles, as men condemned to death" (1 Cor 4:9). He says, "I am the least of the apostles, unworthy to be called an apostle, because I persecuted the Church of God. But by the grace of God I am what I am, and His grace toward me was not in vain. I labored more abundantly than they all, yet not I, but the grace of God which was with me" (1 Cor 15:9-10).
Because of such humility, though he was less than all, grace was given to him among the Gentiles. It was given so that he might preach the unsearchable riches of Christ and teach the fulfillment of what had been hidden from eternity in God, who created all things.
The words incomprehensible and hidden must be understood in two ways. Either the riches once incomprehensible have now been revealed after the sufferings of the Lord. Or what was incomprehensible by nature has become known through revelation from God.
For it is one thing to comprehend a hidden thing through one's own curiosity. Once discovered, it ceases to be unsearchable. It is another thing not to understand by one's own reasoning, but to know by the grace of God.
"To me, the least of all the saints, was this grace given, to preach among the Gentiles the unsearchable riches of Christ, and to enlighten all concerning the dispensation of the mystery hidden from eternity in God, who created absolutely all things."
I do not think that the Apostle Paul was at variance with his secret thoughts when he says that he is truly the least of all the saints. He means, for example, those in Ephesus, in Corinth, in Thessalonica, or all believers throughout the world.
To call oneself the least of all the saints is proof of humility. Yet he would also be guilty of a certain falsehood if he had one thing in his soul and uttered another with his lips. Therefore we must find proof that he truly was the least of all the saints, and nevertheless did not fall away from apostolic dignity.
The Lord says to His disciples, "Whoever among you wishes to be great, let him be least of all, and whoever wishes to be first, let him be last" (Mt 20:26-27). Paul fulfilled this in deed: "I think that God has set us forth last, as men appointed to death" (1 Cor 4:9).
Therefore Paul was weaker than all, and for that reason greater than all who wished to be weak for Christ's sake. He says, "I labored more abundantly than they all, yet not I, but the grace of God which was with me" (1 Cor 15:10).
Because of such humility, though he was less than all, grace was given to him among the Gentiles. It was given so that he might preach the unsearchable riches of Christ and teach the fulfillment of what had been hidden from eternity in God, who created all things.
But if the riches of Christ are unsearchable, how are they preached among the nations? If the mystery was hidden from eternity in God, how is it handed on through Paul to the nations? The words unsearchable and hidden must be understood in two ways.
The riches once unsearchable have now been revealed after the suffering of the Lord. Or, what was unsearchable by nature became known through revelation from God. For it is one thing to comprehend a hidden thing by one's own curiosity. Once discovered, it ceases to be unsearchable.
It is another thing not to understand by one's own reasoning, but to know by the grace of God. What you know and show to others nevertheless remains unsearchable, because the hidden thing was first shown to you only according to the measure accessible to your powers.
The riches of Christ are unsearchable. The Psalmist also bears witness to this, addressing Christ Himself: "How great is the multitude of Thy goodness, which Thou hast laid up for those who fear Thee" (Ps 30:20). This richness of His goodness was hidden from all past ages in God, who is the Creator of all.
Where are Marcion and Valentinus, and all the heretics who assert that one being is Creator of the world, that is, of visible things, and another of invisible things? They call this latter one good. What they call the former, always unknown, I do not know. They call only Him who is Father of Christ good.
Yet God is proclaimed the Creator of all. In Him the mystery of Christ had been hidden from all former ages. By this it is shown that the God of the Old and New Testaments is one and the same.
The mystery hidden from the ages may also be understood otherwise. The ages themselves, that is, all spiritual and rational beings who lived through them, did not know it. For the word age is often understood as meaning the people who live during an age.
Paul speaks in this way in the Epistle to the Galatians: "That He might deliver us from this unrighteous age" (Gal 1:4). Elsewhere it is said, "That He might show in the ages to come" (Eph 2:7), meaning all those who will live in the following ages.