Ecclesiastes observes that humans and animals share “one breath,” and that “as the one dieth, so dieth the other,” emphasizing a common mortality (Ecclesiastes 3:19). It also notes the shared end of returning to dust, stressing human limits before death (Ecclesiastes 3:20).

Ecclesiastes raises the central question: “What profit hath a man of all his labour…under the sun?” (Ecclesiastes 1:3). In the Teacher’s surveys, the conclusion is that even impressive achievements can leave “no profit under the sun” when viewed from the standpoint of what lasts (Ecclesiastes 2:11).

Ecclesiastes opens with the repeated verdict, “Vanity of vanities…all is vanity,” as the book’s keynote about life “under the sun” (Ecclesiastes 1:2). The phrase sums up the Teacher’s claim that much human effort and experience feels like vapor—real, but hard to hold and unable to produce lasting gain (Ecclesiastes 1:3).

The phrase appears in a section praising companionship over isolation, using examples of help, warmth, and protection (Ecclesiastes 4:10–12). “A threefold cord is not quickly broken” summarizes the idea that joined strength endures better than standing alone (Ecclesiastes 4:12).

Ecclesiastes says “to every thing there is a season, and a time to every purpose under the heaven,” then lists paired events such as birth and death (Ecclesiastes 3:1–2). The point is that human life unfolds within appointed times that people cannot fully control or extend (Ecclesiastes 3:11).

Ecclesiastes contrasts having and enjoying what is present with chasing cravings that keep moving beyond reach (Ecclesiastes 6:9). The verse ends by calling this restless pursuit “vanity and vexation of spirit,” tying desire to frustration rather than lasting gain (Ecclesiastes 6:9).

Ecclesiastes uses the proverb “Cast thy bread upon the waters: for thou shalt find it after many days” to describe giving with a long view of return or outcome (Ecclesiastes 11:1). The next verse supports the idea by urging wide distribution because future trouble is uncertain (Ecclesiastes 11:2).

Ecclesiastes says some realities are beyond human power to fix: “who can make that straight, which he hath made crooked?” (Ecclesiastes 7:13). The statement is tied to accepting that God has made both “the day of prosperity” and “the day of adversity,” and that people cannot fully foresee what comes after (Ecclesiastes 7:14).

Ecclesiastes uses the image of dead flies ruining perfume to illustrate how a small amount of folly can outweigh honor and wisdom (Ecclesiastes 10:1). The surrounding sayings continue contrasting wisdom and folly as forces that visibly shape outcomes and reputation (Ecclesiastes 10:1–3).

Ecclesiastes says that in Sheol (the grave) there is “no work, nor device, nor knowledge, nor wisdom,” contrasting death with the opportunities of life (Ecclesiastes 9:10). In the same context it states that the dead no longer share in what is done “under the sun” and their memory fades (Ecclesiastes 9:5–6).

“Under the sun” is Ecclesiastes’ repeated way of describing ordinary human life as it is experienced in this world (Ecclesiastes 1:3). The Teacher uses it when asking what “profit” remains from human labor and striving in the visible, earthly realm (Ecclesiastes 2:11).

Ecclesiastes says that when a sentence against an evil work is not carried out quickly, “the heart of the sons of men is fully set in them to do evil” (Ecclesiastes 8:11). The Teacher notes this as part of the puzzle of wickedness seeming to prosper in the present (Ecclesiastes 8:10–12).

Ecclesiastes warns against delaying payment of a vow, saying God has “no pleasure in fools,” and urges that what is vowed should be paid (Ecclesiastes 5:4). It adds that it is better not to vow than to vow and not pay, connecting careless words with guilt and fear of God (Ecclesiastes 5:5–7).

The Teacher describes testing pleasure and says of laughter, “It is mad,” and of mirth, “What doeth it?” (Ecclesiastes 2:2). After pursuing delights and accomplishments, he concludes it was “vanity and vexation of spirit,” with “no profit under the sun” (Ecclesiastes 2:11).

Ecclesiastes says a person can leave the world “naked” as they came, taking nothing from their labor that they can carry away (Ecclesiastes 5:15). It presents this as a “sore evil,” reinforcing the limits of riches and the certainty of death (Ecclesiastes 5:13–17).

Ecclesiastes says God “hath made every thing beautiful in his time,” and also “set the world” (often rendered “eternity”) in the human heart (Ecclesiastes 3:11). In the same verse, the Teacher adds that people still cannot “find out the work that God maketh from the beginning to the end,” highlighting a limit in human understanding (Ecclesiastes 3:11).

Ecclesiastes says that increasing wisdom can increase sorrow because greater knowledge exposes more of what is “vexation” in life (Ecclesiastes 1:18). The Teacher links this to his attempt to understand wisdom and folly and the limits of what can be made straight by human effort (Ecclesiastes 1:15–18).

Ecclesiastes observes that outcomes do not always match ability: the race is not always to the swift, nor the battle to the strong, nor success to the wise (Ecclesiastes 9:11). It summarizes this unpredictability by saying “time and chance happeneth to them all,” and adds that sudden trouble can catch people unexpectedly (Ecclesiastes 9:11–12).

Ecclesiastes says the house of mourning is better because death is “the end of all men,” and the living should take it to heart (Ecclesiastes 7:2). It connects sorrow with wisdom by saying “the heart of the wise is in the house of mourning,” contrasting it with shallow laughter (Ecclesiastes 7:3–4).

Ecclesiastes states that “he that loveth silver shall not be satisfied with silver,” linking desire for wealth with ongoing dissatisfaction (Ecclesiastes 5:10). It also notes that as goods increase, those who consume them increase, and the rich can lose sleep from abundance and worry (Ecclesiastes 5:11–12).

The Teacher points to repeating cycles in nature and human experience as evidence that patterns recur and people quickly forget what came before (Ecclesiastes 1:9–11). “Nothing new under the sun” is tied to the claim that memory fades and later generations do not remember earlier ones (Ecclesiastes 1:11).

Ecclesiastes says, “Two are better than one; because they have a good reward for their labour” (Ecclesiastes 4:9). It explains the practical advantages: one can help the other up, provide warmth, and offer stronger defense than being alone (Ecclesiastes 4:10–12).

Ecclesiastes describes the frustration of labor because what a person toils for may be left “to the man that shall be after me,” who did not work for it (Ecclesiastes 2:18–19). This transfer, along with “sorrow” and restless nights, is given as a reason work can feel burdensome (Ecclesiastes 2:22–23).

Ecclesiastes cautions against cursing a king or the rich “in thy thought” because “a bird of the air shall carry the voice” (Ecclesiastes 10:20). The point is that speech can travel unexpectedly and return consequences even when said privately (Ecclesiastes 10:20).