'Doth' in the Bible

Who knoweth the spirit of the children of men? Doth it go upwards? and the spirit of the beasts, doth it go downwards to the earth?

The sleep of the labourer is sweet, whether he have eaten little or much; but the fulness of the rich doth not suffer him to sleep.

And this also is a grievous evil, that in all points as he came so doth he go away, and what profit hath he, in having laboured for the wind?

then I saw that all is the work of God, and that man cannot find out the work that is done under the sun: because however man may labour to seek it out, yet doth he not find it; and even, if a wise man think to know it, he shall not be able to find it out.