'Lion' in the Bible

Be serious! Be alert! Your adversary the Devil is prowling around like a roaring lion, looking for anyone he can devour.

The first living creature was like a lion; the second living creature was like a calf; the third living creature had a face like a man; and the fourth living creature was like a flying eagle.

Then one of the elders said to me, “Stop crying. Look! The Lion from the tribe of Judah, the Root of David, has been victorious so that He may open the scroll and its seven seals.”

and he cried out with a loud voice like a roaring lion. When he cried out, the seven thunders spoke with their voices.