The NIV Bible translates Psalm 37:30+31 as :
"The mouths of the righteous utterwisdom, and their tongues speak what is just. The law of their God is in their hearts; their feet do not slip."
It indicates that if someone has the 'law of God' in their hearts (meaning they deeply LOVE God's regulations and orders, and following them is their joy) they work hard to understand and speak God's wisdom with justice(Deuteronomy 6:6/Psalm 40:8/Hebrews 8:10).
Looking at the actual Hebrew words, gives us even more insight into the meaning. The word translated 'utter' here, actually MEANS to "soliloquize"(speaking and reasoning inside yourself, in an 'undertone'), 'to murmur' or 'ponder'. This involves more than just TALKING, it involves THINKING and REASONING in advance... 'meditating' or thinking deeply and prayerful on scriptural things (Joshua 1:8/Psalm 1:2) and then speaking with God's wisdom and justice. Those 'righteous' in God's eyes use God's word to successfully direct their lives and help others do the same(Colossians 4:6/Ephesians 4:29/Matthew 12:35).
One familiar verse is 'The meek shall inherit the earth'(Psalm 37:10+29/Matthew 5:5)
Psalm 37 is a Psalm that highlights the peace and rest available to one who places their trust in God compared to those who choose to go against righteousness. They choose the way which leads to destruction. God's people can call upon Him, but the wicked have no such refuge.
Comfort passages: Psalm 46:1-3; Psalm 138:7; Psalm 18:2; John 16:33; Matthew 11:28; II Corinthians 1:3-5; Romans 8:18. Help in Troubles: Nahum 1:7; Psalm 42:11; Psalm 91:10-11; Psalm 37:24;Micah 7:8-9;Psalm 32:7
Leviticus chapter 13 verse 29 and 30 chapter 14 verse 19 chapter 19 verse 27 chapter 21 verse 5 1 Samuel chapter 17 verse 35 chapter 21 verse 13 2 Samuel chapter 10 verse 4 chapter 10 verse 5 chapter 19 verse 24 chapter 20 verse 9 Ezra chapter 9 verse 3 Psalm chapter 133 verse 2 Isaiah chapter 7 verse 20 chapter 15 verse 2 Jeremiah chapter 41 verse 5 chapter 48 verse 37 Ezekiel chapter 5 verse 1
Psalm 14 and Psalm 53 Also 2 Kings 19 and Isaiah 37
The scripture you may be referring to is Psalm 37:25 "I have been young, and now am old; yet have I not seen the righteous forsaken, nor his seed begging bread."
30% of 37 = 37*30/100 = 11.1
Proverbs 6:34 and 27:4 discuss the consequences of human jealousy. Psalm 37:7-8 is about overcoming jealousy.
37/30 = 1 7/30
30+7=37 (37^2)^0.5=37
The median of the numbers 19 30 33 37 37 42 is 35.
35.07