Musar su Proverbi 27:21

Behold these are honorable reasons - strong as a mirror of cast metal. But there is another honorable reason above them all - and we hinted to it in the introduction to our words about the matters of the evil groups mentioned: As it is known that among the ways to sanctify His name, may He be blessed, is to make known - with every expression of the lips, with every hint of the eyes and with every practice and movement of the hands - that the foundation of man’s soul and his glorious adornment, and the good and the essence, and the purpose and the preciousness in it, is the service of God, may He be blessed, and fear of Him; as it is written (Ecclesiastes 12:13), “for this is all of man.” And this thing is the glory of God, may He be blessed. And the ones that spurn Torah scholars and fear of Him are nullifying this knowledge and showing the opposite with their behavior. And it is as if they are saying, the service of [God] is not the essence; and the root of the matter is found somewhere besides the service of God, may He be blessed. So they are profaning the Torah - therefore they shall be lost from among the congregation. And it will cease (vayikhlu) in their mouths. (It appears to me that it should say, vayiratsu with their mouths - like the usage [in Psalms 49:14], “the end of those pleased yirtsu with their mouths,” which according to some commentators is an expression of speaking. Or maybe it should say, “and they will be able to say [vayokhlu leimor] with their mouths” - meaning to say that they will be able to say, by way of an excuse) [On my opinion, it should say, express (vayibateu) with their mouths - Y. B.] As they are serving God without involvement in Torah study.
Is it not a well known thing that the service does not survive without those that study Torah, who meditate upon it day and night? For they instruct knowledge and bear understanding of the times, to know what the Israelites should do. And they hold up [the Torah] in Israel, so that it will not be forgotten from the mouth of their seed. And in a place where there is no one involved with Torah, the snares grow and there is no upright person. Therefore the servants of God, may He be blessed, honor the sages of the Torah for [the sake of] God’s honor; and to make known that only His service is the essence of existence.
And since it has been clarified that God, may He be blessed, created everything for His glory - a man is obligated to pay attention at all times, to honor God and sanctify Him with all of his words; to exult Him, to praise Him and to always bless Him, as it is stated (Psalms 34:2), “I bless the Lord at all times; praise of Him is ever in my mouth.” And whenever he stands among the people and speaks with his friends, he should reflect with understanding, be exacting and supervise everything that comes out of his mouth; to sanctify God with his words; to speak in praise of His service and in glorification of His fear; and to praise His (works) [servants] and those that fear Him. And through this, he will merit - with the meditation of his heart and with the expression of his lips, [and] without exertion or the actions of his hands - great merit [that reach] to the heavens. For this is from the essence of man’s creation. And it is stated, (Proverbs 27:21), “For silver, the crucible; for gold, the furnace; and a man is tested by his praise.” And its explanation is that the virtues of a man are according to what he praises: If he praises good deeds, the sages and the righteous ones - know that you have tested that he is a good man and the root of justice is found within him. For he would not find it in his heart to praise the good and good people with all of his words - and to detest sins and spurn their masters - without being disgusted by evil and choosing the good. And even if it is possible that he has some hidden iniquities in his hand, he is nevertheless among the lovers of justice. So his root is from [the right] choice and he is from the congregation of those that honor God. But one who praises detestable acts or praises evildoers is a complete evildoer and profanes the service of God.