Ecclesiastes Chapter 5
Like the Psalms and Proverbs, Ecclesiastes frequently emphasizes the futility of physical life if (and only if) it is wasted as an end in itself - literally, a dead end. But when it is used properly, as a time of conception (see Spiritual Conception), it serves its disposable purpose as intended. Humans weren't born to die; they die to be born when the time is due i.e. "But some man will say, How are the dead raised up? and with what body do they come? Thou fool, that which thou sowest is not quickened, except it die [see The Quick and The Dead]: And that which thou sowest, thou sowest not that body that shall be, but bare grain, it may chance of wheat, or of some other grain" (1 Corinthians 15:35-37 KJV).
"Keep thy foot when thou goest to the House of God [see Mansions], and be more ready to hear, than to give the sacrifice of fools: for they consider not that they do evil. Be not rash with thy mouth, and let not thine heart be hasty to utter any thing before God: for God is in heaven, and thou upon earth: therefore let thy words be few. For a dream cometh through the multitude of business; and a fool's voice is known by multitude of words.
When thou vowest a vow unto God, defer not to pay it; for He hath no pleasure in fools: pay that which thou hast vowed. Better is it that thou shouldest not vow, than that thou shouldest vow and not pay. Suffer not thy mouth to cause thy flesh to sin; neither say thou before the angel, that it was an error: wherefore should God be angry at thy voice, and destroy the work of thine hands? For in the multitude of dreams and many words there are also divers vanities: but fear thou God.
If thou seest the oppression of the poor, and violent perverting of judgment and justice in a Province, marvel not at the matter: for he that is higher than the highest regardeth; and there be higher than they. Moreover the profit of the earth is for all: the king himself is served by the field.
He that loveth silver shall not be satisfied with Silver; nor he that loveth abundance with increase: this is also vanity.
When goods increase, they are increased that eat them: and what good is there to the owners thereof, saving the beholding of them with their eyes?
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.
There is a sore evil which I have seen under the sun, namely, riches kept for the owners thereof to their hurt. But those riches perish by evil travail: and he begetteth a son, and there is nothing in his hand. As he came forth of his mother's womb, naked shall he return to go as he came, and shall take nothing of his labour, which he may carry away in his hand. And this also is a sore evil, that in all points as he came, so shall he go: and what profit hath he that hath laboured for the wind? All his days also he eateth in darkness, and he hath much sorrow and wrath with his sickness.
Behold that which I have seen: it is good and comely for one to eat and to drink, and to enjoy the good of all his labour that he taketh under the sun all the days of his life, which God giveth him: for it is his portion. Every man also to whom God hath given riches and wealth, and hath given him power to eat thereof, and to take his portion, and to rejoice in his labour; this is the gift of God. For he shall not much remember the days of his life; because God answereth him in the joy of his heart." (Ecclesiastes 5:1-20 KJV)
Ecclesiastes Chapter 6
The "soul" lives until it dies (see Where Is Your Soul? and Giving Up The Ghost). That is why and how the repentant will live (see When Will You Be Judged?) and the unrepentant will not (see They Shall Be Ashes). Jesus Christ didn't die for sinners; Christ died for repentant sinners. Unrepentant sinners are going to be cast into the lake of fire (see also Baptism Of Fire).
"There is an evil which I have seen under the sun, and it is common among men: A man to whom God hath given riches, wealth, and honour, so that he wanteth nothing for his soul of all that he desireth, yet God giveth him not power to eat thereof, but a stranger eateth it: this is vanity, and it is an evil disease.
If a man beget an hundred children, and live many years, so that the days of his years be many, and his soul be not filled with good, and also that he have no burial; I say, that an untimely birth is better than he. For he cometh in with vanity, and departeth in darkness, and his name shall be covered with darkness. Moreover he hath not seen the sun, nor known any thing: this hath more rest than the other. Yea, though he live a thousand years twice told, yet hath he seen no good: do not all go to one place?
All the labour of man is for his mouth, and yet the appetite is not filled. For what hath the wise more than the fool? what hath the poor, that knoweth to walk before the living? Better is the sight of the eyes than the wandering of the desire: this is also vanity and vexation of spirit.
That which hath been is named already, and it is known that it is man: neither may he contend with him that is mightier than he. Seeing there be many things that increase vanity [see The Two Kinds Of Pride], what is man the better? For who knoweth what is good for man in this life, all the days of his vain life which he spendeth as a shadow? for who can tell a man what shall be after him under the sun?" (Ecclesiastes 6:1-12 KJV)
Ecclesiastes Chapter 7
Ecclesiastes has been regarded by some as a lamentation of dispair (some have even gone so far as to suggest that the author of Ecclesiastes was suicidal, which he was not), but it's about recognizing that true happiness of life will only come when there is nothing to lose or be hurt by e.g. "And God shall wipe away all tears from their eyes; and there shall be no more death [see Death's Obituary], neither sorrow, nor crying, neither shall there be any more pain: for the former things are passed away" (Revelation 21:4 KJV)
"A good name is better than precious ointment; and the day of death than the day of one's birth [see Could Christ Return Tonight?]. It is better to go to the house of mourning, than to go to the house of feasting: for that is the end of all men; and the living will lay it to his heart. Sorrow is better than laughter: for by the sadness of the countenance the heart is made better. The heart of the wise is in the house of mourning; but the heart of fools is in the house of mirth. It is better to hear the rebuke of the wise, than for a man to hear the song of fools. For as the crackling of thorns under a pot, so is the laughter of the fool: this also is vanity.
Surely oppression maketh a wise man mad; and a gift destroyeth the heart. Better is the end of a thing than the beginning thereof: and the patient in spirit is better than the proud in spirit. Be not hasty in thy spirit to be angry: for anger resteth in the bosom of fools. Say not thou, What is the cause that the former days were better than these? for thou dost not inquire wisely concerning this.
Wisdom is good with an inheritance: and by it there is profit to them that see the sun. For wisdom is a defence, and money is a defence: but the excellency of knowledge is, that wisdom giveth life to them that have it.
Consider the work of God: for who can make that straight, which he hath made crooked? In the day of prosperity be joyful, but in the day of adversity consider: God also hath set the one over against the other [see Why Does God Allow Evil?], to the end that man should find nothing after him.
All things have I seen in the days of my vanity: there is a just man that perisheth in his righteousness, and there is a wicked man that prolongeth his life in his wickedness. Be not righteous over much; neither make thyself over wise: why shouldest thou destroy thyself? Be not over much wicked, neither be thou foolish: why shouldest thou die before thy time? It is good that thou shouldest take hold of this; yea, also from this withdraw not thine hand: for he that feareth God shall come forth of them all.
Wisdom strengtheneth the wise more than ten mighty men which are in the city.
For there is not a just man upon earth, that doeth good, and sinneth not.
Also take no heed unto all words that are spoken; lest thou hear thy servant curse thee: For oftentimes also thine own heart knoweth that thou thyself likewise hast cursed others.
All this have I proved by wisdom: I said, I will be wise; but it was far from me. That which is far off, and exceeding deep, who can find it out? I applied mine heart to know, and to search, and to seek out wisdom, and the reason of things, and to know the wickedness of folly, even of foolishness and madness: And I find more bitter than death the woman, whose heart is snares and nets, and her hands as bands: whoso pleaseth God shall escape from her; but the sinner shall be taken by her.
Behold, this have I found, saith the preacher, counting one by one, to find out the account: Which yet my soul seeketh, but I find not: one man among a thousand have I found; but a woman among all those have I not found. Lo, this only have I found, that God hath made man upright; but they have sought out many inventions." (Ecclesiastes 7:1-29 KJV)
Fact Finder: Who will be accepted as citizens of the Kingdom of God?
See Huddled Masses Yearning To Breathe Free