What Does “Legion” Mean in the Bible?
A Roman army of about six thousand soldiers. “A legion” also means “a great many.”
Where it appears in the Bible
Matthew 26:53; Mark 5:9
What the Bible says
Matthew 26:53
Thinkest thou that I cannot ask my Father, and he will give me presently more than twelve legions of angels?
Mark 5:9
And he asked him: What is thy name? And he saith to him: My name is Legion, for we are many.
Douay-Rheims Bible (Challoner revision), public domain.
Source: RAE, “legión”