KJV:
For God giveth to a man that is good in his sight wisdom, and knowledge, and joy: but to the sinner he giveth travail, to gather and to heap up, that he may give to him that is good before God. This also is vanity and vexation of spirit.
NASB:
For to a person who is good in His sight He has given wisdom and knowledge and joy, while to the sinner He has given the task of gathering and collecting so that he may give to one who is good in God's sight. This too is vanity and striving after wind.
KJV:
I have seen the travail, which God hath given to the sons of men to be exercised in it.
NASB:
I have seen the task which God has given the sons of men with which to occupy themselves.
KJV:
He hath made every thing beautiful in his time: also he hath set the world in their heart, so that no man can find out the work that God maketh from the beginning to the end.
NASB:
He has made everything appropriate in its time. He has also set eternity in their heart, yet so that man will not find out the work which God has done from the beginning even to the end.
KJV:
And also that every man should eat and drink, and enjoy the good of all his labour, it is the gift of God.
NASB:
moreover, that every man who eats and drinks sees good in all his labor-- it is the gift of God.
KJV:
I said in mine heart concerning the estate of the sons of men, that God might manifest them, and that they might see that they themselves are beasts.
NASB:
I said to myself concerning the sons of men, "God has surely tested them in order for them to see that they are but beasts."
KJV:
For that which befalleth the sons of men befalleth beasts; even one thing befalleth them: as the one dieth, so dieth the other; yea, they have all one breath; so that a man hath no preeminence above a beast: for all is vanity.
NASB:
For the fate of the sons of men and the fate of beasts is the same. As one dies so dies the other; indeed, they all have the same breath and there is no advantage for man over beast, for all is vanity.
KJV:
Who knoweth the spirit of man that goeth upward, and the spirit of the beast that goeth downward to the earth?
NASB:
Who knows that the breath of man ascends upward and the breath of the beast descends downward to the earth?
KJV:
Wherefore I perceive that there is nothing better, than that a man should rejoice in his own works; for that is his portion: for who shall bring him to see what shall be after him?
NASB:
I have seen that nothing is better than that man should be happy in his activities, for that is his lot. For who will bring him to see what will occur after him?
KJV:
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.
NASB:
Furthermore, as for every man to whom God has given riches and wealth, He has also empowered him to eat from them and to receive his reward and rejoice in his labor; this is the gift of God.