'Armies' in the Bible

Now the Philistines gathered their armies for battle and were assembled at Socoh, which belongs to Judah; and they camped between Socoh and Azekah, in Ephes-dammim.

Then David spoke to the men who were standing by him, “What will be done for the man who kills this Philistine and removes the disgrace [of his taunting] from Israel? For who is this uncircumcised Philistine that he has taunted and defied the armies of the living God?”

Your servant has killed both the lion and the bear; and this uncircumcised Philistine will be like one of them, since he has taunted and defied the armies of the living God.”

But David’s men said to him, “Listen, we are afraid here in Judah. How much more then if we go to Keilah against the battle lines of the Philistines?”