Finally, brethren, pray for us, that the word of the Lord may have free course, and be glorified, even as it is with you: Finally, brethren - The words το λοιπον do not mean finally, but, furthermore - to come to a conclusion - what remains is this - I shall only add - any of these phrases expresses the sense of the original.
Pray for us - God, in the order of his grace and providence, has made even the success of his Gospel dependent, in a certain measure, on the prayers of his followers. Why he should do so we cannot tell, but that he has done so we know; and they are not a little criminal who neglect to make fervent supplications for the prosperity of the cause of God.
May have free course - They were to pray that the doctrine of the Lord, ὁ λογος του Κυριου, might run, τρεχῃ, an allusion to the races in the Olympic games: that, as it had already got into the stadium or race course, and had started fairly, so it might run on, get to the goal, and be glorified; i.e., gain the crown, appointed for him that should get first to the end of the course.