Charles H. Spurgeon on Psalms 40:9

I have preached righteousness in the great congregation. The purest morality and the highest holiness were preached by Jesus. Righteousness divine was his theme. Our Lord's whole life was a sermon, eloquent beyond compare, and it is heard each day by myriads. Moreover, he never shunned in his ministry to declare the whole counsel of God; God's great plan of righteousness he plainly set forth. He taught openly in the temple, and was not ashamed to be a faithful and a true witness. He was the great evangelist; the master of itinerant preachers; the head of the clan of open air missionaries. O servants of the Lord, hide not your lights, but reveal to others what your God has revealed to you; and especially by your lives testify for holiness, be champions for the right, both in word and deed. Lo, I have not refrained my lips, O Lord, thou knowest. Never either from love of ease, of fear of men, did the Great Teacher's lips become closed. He was instant in season and out of season. The poor listened to him, and princes heard his rebuke; Publicans rejoiced at him, and Pharisees raged, but to them both he proclaimed the truth from heaven. It is well for a tried believer when he can appeal to God and call him to witness that he has not been ashamed to bear witness for him; for rest assured if we are not ashamed to confess our God, he will never be ashamed to own us. Yet what a wonder is here, that the Son of God should plead, just as we plead, and urge just such arguments as would befit the mouths of his diligent minsters! How truly is he "made like unto his brethren."