'Though' in the Bible

yea, though he live a thousand years twice told, and yet enjoy no good, do not all go to one place?

Though a sinner do evil a hundred times, and prolong his days , yet surely I know that it shall be well with them that fear God, that fear before him:

then I beheld all the work of God, that man cannot find out the work that is done under the sun: because however much a man labor to seek it out, yet he shall not find it; yea moreover, though a wise man think to know it, yet shall he not be able to find it.