'Part' in the Bible

Behold, here is what I have seen to be good and fitting: to eat and drink, and to find enjoyment in all the labor in which he labors under the sun during the few days of his life which God gives him—for this is his [allotted] reward.

Every man to whom God has given money and wealth and the power to have pleasure in it and to do his part and have joy in his work: this is given by God.

Furthermore, their love, their hate, and their envy have been long lost. Never again will they have a part in what happens on earth.

Have joy with the woman of your love all the days of your foolish life which he gives you under the sun. Because that is your part in life and in your work which you do under the sun.

Divide your portion to seven, or even to eight, for you do not know what misfortune may occur on the earth.