'Great Things' in the Bible

“Therefore hear, O [Gentile] nations,And see, O congregation, what [vengeful act] is to be done to them.

You plan great things and you do mighty deeds. You see everything people do. You reward each of them for the way they live and for the things they do.

Call unto me, and I will answer thee, and will show thee great things, and difficult, which thou knowest not.

And seekest thou great things for thyself? seek them not: for, behold, I will bring evil upon all flesh, saith the LORD: but thy life will I give unto thee for a prey in all places whither thou goest.