'Lions' in the Bible

Where is the den of the lions, and the feeding-place of the young lions, where the lion and the lioness walked, the lion's whelp, and none made them afraid?

Behold, I am against thee, saith Jehovah of hosts, and I will burn her chariots in the smoke, and the sword shall devour thy young lions; and I will cut off thy prey from the earth, and the voice of thy messengers shall no more be heard.