'Observe' in the Bible

Observe this: The Lord God of Hostsis about to remove from Jerusalem and from Judahevery kind of security:the entire supply of bread and water,

You are worn out with your many consultations.So let them stand and save you—the astrologers, who observe the stars,who predict monthlywhat will happen to you.

You have heard it. Observe it all.Will you not acknowledge it?From now on I will announce new things to you,hidden things that you have not known.