Verse 40. - For he that is not against us is for us. In St. Matthew (Matthew 12:30) we find our Lord using a somewhat similar expression, only in an inverted order. He there says, "He that is not with me is against me." The lesson which both these apothegms teach is the same, that there is no such thing as neutrality in reference to Christ and his cause. We must be either with him or against him. Dr. Morison on St. Mark in this place says, "When in applied morals we sit in judgment on ourselves, we should in ordinary circumstances apply the law obversely and stringently,' he who is not with Christ is against him.' But when we are sitting in judgment on others, into whose hearts we cannot look directly, we should in ordinary circumstances apply the law reversely and generously, ' He that is not against Christ is with him.'"

9:30-40 The time of Christ's suffering drew nigh. Had he been delivered into the hands of devils, and they had done this, it had not been so strange; but that men should thus shamefully treat the Son of man, who came to redeem and save them, is wonderful. Still observe that when Christ spake of his death, he always spake of his resurrection, which took the reproach of it from himself, and should have taken the grief of it from his disciples. Many remain ignorant because they are ashamed to inquire. Alas! that while the Saviour teaches so plainly the things which belong to his love and grace, men are so blinded that they understand not his sayings. We shall be called to account about our discourses, and to account for our disputes, especially about being greater than others. Those who are most humble and self-denying, most resemble Christ, and shall be most tenderly owned by him. This Jesus taught them by a sign; whoever shall receive one like this child, receives me. Many have been like the disciples, ready to silence men who have success in preaching to sinners repentance in Christ's name, because they follow not with them. Our Lord blamed the apostles, reminding them that he who wrought miracles in his name would not be likely to hurt his cause. If sinners are brought to repent, to believe in the Saviour, and to live sober, righteous, and godly lives, we then see that the Lord works by the preacher.For he that is not against us, is on our part. Many copies read, "he that is not against you, is for you"; as this man; he was not against either Christ, or his disciples; he was doing the same work, promoting the same interest, and destroying the kingdom of Satan: and therefore, though he did not follow them, and had not his commission immediately from Christ; yet, inasmuch as he was opposing the same common enemy, and did nothing against them, he ought to be reckoned as one for them, and on their side. It is a proverbial expression, signifying that all that are not against a man, and take not the part of his enemy, are to be accounted his friends.