Let no man beguile you of your reward in a voluntary (false) humility -Colossians 2:18

The Apostle gives us this warning, “Let no man beguile you of your reward,” reminding us that these persons are very likely to beguile us. They will beguile us by their character. Have I not often heard young people say of such and such a preacher who preaches error, “But he is so good a man.” That is nothing to the point. “Though we or an angel from heaven preach any other gospel unto you than that which we have preached unto you, let him be accursed.” If the life of the man should be blameless as the life of Christ, yet if he preach to you other than the gospel of Jesus Christ, take no heed of him; he weareth but the sheep’s clothing, and is a wolf after all. Some will plead, “But such and such a man is so eloquent”. Ah! brethren, may the day never come when your faith shall stand in the words of men. What is a ready orator, after all, that he should convince your hearts? Are there not ready orators caught any day for everything? Men speak, speak fluently, and speak well in the cause of evil, and there are some that can speak much more fluently and more eloquently for evil than any of our poor tongues are ever likely to do for the right. But words, words, words, flowers of rhetoric, oratory-are these the things that saved you? Are ye so foolish that having begun in the spirit by being convinced of your sins, having begun by being led simply to Christ, and putting your trust in Him-are you now to be led astray by these poetic utterances and flowery periods of men? God forbid! Let nothing of this kind beguile you. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/3466.cfm