'Though' in the Bible

But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed.

Brethren, I speak after the manner of men; Though it be but a man's covenant, yet if it be confirmed, no man disannulleth, or addeth thereto.

Now I say, That the heir, as long as he is a child, differeth nothing from a servant, though he be lord of all;