For a couple of reasons I am very thankful that God did not make me an instructor in righteousness for other men. I feel free to express myself but that doesn't mean I speak for God. I am certain God is quite capable of speaking to anyone without using me as a mouthpiece. I know most of you would be as thankful for that as I am.
Coming back to my reasons, I readily recognize that my example is most often a poor one in leading anyone to righteous behavior. I find knowing the right thing and actually doing it are vastly different. If actions speak louder than words, and they surely do, then what I teach is generally not to be followed. I hope to do better in the future, but that progress depends on me.
Additionally, those who do see themselves as the religious instructors of others labor under an extremely arduous task, especially so, if they tend to be upset when their instruction is rejected, as it often is. Try as they might, those who claim a calling or divine mandate to teach others in how to please God so often come across as smug and condescending. It's extremely hard to instruct with humility, maybe impossible.
Finally, those who accept a role of religious instructors quite often feel a further need to denounce and oppose beliefs and behaviors they feel are unrighteous. The result is a pervasive sense of alienation from most of their fellow human beings. There is a also an accompanying sense of decay and even impending doom, which generates a flood of negative emotion and stress.
It is difficult for me to see how anything that introduces and magnifies anger and stress in my life could be beneficial to my spiritual or physical well-being. Life is challenging enough without taking on the task of saving the world. Though the world could use a bit of saving, my part in that salvation will have to be confined to saving myself from trying to be what I am not and compelling others to do the same.