Review lines 2-14 in scene 4.what does this description of the previous thane of cawdor's actions and unlimited fate foreshadow or hint at, for macbeth

The first Thane of Cawdor was, like Macbeth, a man King Duncan trusted. He eventually was found to be a traitor and was executed. Here is a little foreshadowing that Macbeth didn't pick up on.