Proverbs 30:15; Proverbs 30:18; Proverbs 30:21; Proverbs 30:24; Proverbs 30:29

15 The bloodsucking leech has two daughters--"Give!" and "Give!" Three things are never satisfied. Four never say, "Enough!":
18 Three things are too amazing to me, even four that I cannot understand:
21 Three things cause the earth to tremble, even four it cannot bear up under:
24 Four things on earth are small, yet they are very wise:
29 There are three things that walk with dignity, even four that march with dignity: