Psalm 37:1-2 - Do not fret because of evil men

Do not fret because of evil men or be envious of those who do wrong; for like the grass they will soon wither, like green plants they will soon die away.

Fret not thyself because of evildoers, neither be thou envious against the workers of iniquity. For they shall soon be cut down like the grass, and wither as the green herb.

Do not fret because of evildoers, Be not envious toward wrongdoers. For they will wither quickly like the grass And fade like the green herb.

Psalm 37:1-2

Commentary

This psalm shares the wisdom of an old man who had walked with the Lord (v. 25). He had battled with evil men and knew the frustration of seeing the wicked prosper and the righteous suffer. As he reviewed the past, he gave some wise counsel to keep us from fretting against the Lord when things are not going the way we want them to go.

Wiersbe, W. W. (1997, c1991). With the word Bible commentary (Ps 37:1). Nashville: Thomas Nelson.

Jeremiah 9:23-24 - Let not the wise man boast of his wisdom or the strong man boast of his strength

This is what the LORD says: "Let not the wise man boast of his wisdom or the strong man boast of his strength or the rich man boast of his riches, but let him who boasts boast about this: that he understands and knows me, that I am the LORD, who exercises kindness, justice and righteousness on earth, for in these I delight," declares the LORD.

Thus saith the LORD, Let not the wise man glory in his wisdom, neither let the mighty man glory in his might, let not the rich man glory in his riches: But let him that glorieth glory in this, that he understandeth and knoweth me, that I am the LORD which exercise lovingkindness, judgment, and righteousness, in the earth: for in these things I delight, saith the LORD.

Thus says the LORD, "Let not a wise man boast of his wisdom, and let not the mighty man boast of his might, let not a rich man boast of his riches; but let him who boasts boast of this, that he understands and knows Me, that I am the LORD who exercises lovingkindness, justice and righteousness on earth; for I delight in these things," declares the LORD.

Jeremiah 9:23-24

Commentary

The people with whom Jeremiah contended were depending on their own capabilities rather than on God. Glory may also be translated boast, meaning "to praise oneself." The idea is that people should find their real meaning and true worth in the fact that they know God and may celebrate His attributes. True knowledge of God resulting from an intimate relationship with Him will be demonstrated in a person's character.
Three attributes of God that He demands of people called by His Name are lovingkindness, meaning "loyal love"; judgment, meaning "justice"; and righteousness, meaning "uprightness."

Radmacher, E. D., Allen, R. B., & House, H. W. (1999). Nelson's new illustrated Bible commentary (Je 9:23-24). Nashville: T. Nelson Publishers.

"Humans strive for wisdom, might, and riches, while God delights in lovingkindness, judgment (justice), and righteousness. Blessed is the one who understands the Lord so as to delight in what He delights."
-G. Herbert Livingston