12 distinct Hebrew words appear in this verse.

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

• Eccl 1:14 — I have seen all the works that are done under the sun; and, behold, all is vanity and vexation of spirit.
• Eccl 2:1 — I said in mine heart, Go to now, I will prove thee with mirth, therefore enjoy pleasure: and, behold, this also is vanity.
• Eccl 2:20 — Therefore I went about to cause my heart to despair of all the labour which I took under the sun.
• Eccl 2:22 — For what hath man of all his labour, and of the vexation of his heart, wherein he hath laboured under the sun?
• Eccl 2:23 — For all his days are sorrows, and his travail grief; yea, his heart taketh not rest in the night. This is also vanity.
• Eccl 4:8 — There is one alone, and there is not a second; yea, he hath neither child nor brother: yet is there no end of all his labour; neither is his eye satisfied with riches; neither saith he, For whom do I
• Eccl 5:12 — The sleep of a labouring man is sweet, whether he eat little or much: but the abundance of the rich will not suffer him to sleep.
• Eccl 5:17 — All his days also he eateth in darkness, and he hath much sorrow and wrath with his sickness.
• Eccl 6:7 — All the labour of man is for his mouth, and yet the appetite is not filled.
• Eccl 8:16 — When I applied mine heart to know wisdom, and to see the business that is done upon the earth: (for also there is that neither day nor night seeth sleep with his eyes:)
• Ezek 34:25 — And I will make with them a covenant of peace, and will cause the evil beasts to cease out of the land: and they shall dwell safely in the wilderness, and sleep in the woods.
• Gen 3:17 — And unto Adam he said, Because thou hast hearkened unto the voice of thy wife, and hast eaten of the tree, of which I commanded thee, saying, Thou shalt not eat of it: cursed is the ground for thy sak
• Isa 30:20 — And though the Lord give you the bread of adversity, and the water of affliction, yet shall not thy teachers be removed into a corner any more, but thine eyes shall see thy teachers:
• Jer 31:26 — Upon this I awaked, and beheld; and my sleep was sweet unto me.
• Job 11:18 — And thou shalt be secure, because there is hope; yea, thou shalt dig about thee, and thou shalt take thy rest in safety.
• Prov 3:24 — When thou liest down, thou shalt not be afraid: yea, thou shalt lie down, and thy sleep shall be sweet.
• Prov 31:15 — She riseth also while it is yet night, and giveth meat to her household, and a portion to her maidens.
• Prov 31:18 — She perceiveth that her merchandise is good: her candle goeth not out by night.
• Ps 3:5 — I laid me down and slept; I awaked; for the LORD sustained me.
• Ps 3:5 — I laid me down and slept; I awaked; for the LORD sustained me.
• Ps 4:8 — I will both lay me down in peace, and sleep: for thou, LORD, only makest me dwell in safety.
• Ps 39:5 — Behold, thou hast made my days as an handbreadth; and mine age is as nothing before thee: verily every man at his best state is altogether vanity. Selah.
• Ps 39:6 — Surely every man walketh in a vain shew: surely they are disquieted in vain: he heapeth up riches, and knoweth not who shall gather them.
• Ps 60:5 — That thy beloved may be delivered; save with thy right hand, and hear me.