Albert Barnes Commentary Romans 15:29

"And I know that, when I come unto you, I shall come in the fulness of the blessing of Christ." — Romans 15:29 (ASV)

I am sure. Greek, I know; expressing the fullest confidence, a confidence that was greatly confirmed by the success of his labours elsewhere.

In the fullness of the blessing, etc. This is a Hebrew mode of expression, where one noun performs the purpose of an adjective, and means with a full or abundant blessing. This confidence he expressed in other language in Romans 1:11-12 (see the notes on Romans 1:11).

Of the gospel of Christ. This is that which the gospel of Christ is fitted to impart. Thus, every minister of the gospel should wish to go. This should be his ever-burning desire in preaching. Paul went to Rome; but he went in bonds, Acts chapters 27 and 28. But though he went in this manner, he was permitted there to preach the gospel for at least two years; nor can we doubt that his ministry was attended with the anticipated success, Acts 28:30–31.

God may disappoint us in regard to the mode in which we purpose to do good; but if we really desire it, he will enable us to do it in his own way. It may be better to preach the gospel in bonds than at liberty; it is better to do it even in a prison than not at all.

Bunyan wrote the Pilgrim's Progress to amuse his heavy hours during a twelve years' cruel imprisonment. If he had been at liberty, he probably would not have written it at all. The great desire of his heart was accomplished, but a prison was the place in which to do it. Paul preached; but preached in chains.