'Though' in the Bible

And though he had lived a thousand years twice over, yet good he hath not seen; to the same place doth not every one go?

Though a sinner is doing evil a hundred times, and prolonging himself for it, surely also I know that there is good to those fearing God, who fear before Him.

then I considered all the work of God, that man is not able to find out the work that hath been done under the sun, because though man labour to seek, yet he doth not find; and even though the wise man speak of knowing he is not able to find.