12 distinct Hebrew words appear in this verse.

3 passages from patristic writers, Reformers, and church catechisms citing this verse.

• Eccl 1:13 — And I gave my heart to seek and search out by wisdom concerning all things that are done under heaven: this sore travail hath God given to the sons of man to be exercised therewith.
• Eccl 2:12 — And I turned myself to behold wisdom, and madness, and folly: for what can the man do that cometh after the king? even that which hath been already done.
• Eccl 8:9 — All this have I seen, and applied my heart unto every work that is done under the sun: there is a time wherein one man ruleth over another to his own hurt.
• Eccl 10:13 — The beginning of the words of his mouth is foolishness: and the end of his talk is mischievous madness.
• Josh 7:13 — Up, sanctify the people, and say, Sanctify yourselves against to morrow: for thus saith the LORD God of Israel, There is an accursed thing in the midst of thee, O Israel: thou canst not stand before t
• Mark 7:22 — Thefts, covetousness, wickedness, deceit, lasciviousness, an evil eye, blasphemy, pride, foolishness:
• Prov 2:2 — So that thou incline thine ear unto wisdom, and apply thine heart to understanding;
• Prov 6:32 — But whoso committeth adultery with a woman lacketh understanding: he that doeth it destroyeth his own soul.
• Prov 22:17 — Bow down thine ear, and hear the words of the wise, and apply thine heart unto my knowledge.