'Five' in the Bible

Now Jonathan, Saul’s son, had a son crippled in his feet. He was five years old when the report of Saul and Jonathan came from Jezreel, and his nurse took him up and fled. And it happened that in her hurry to flee, he fell and became lame. And his name was Mephibosheth.

So the king took the two sons of Rizpah the daughter of Aiah, Armoni and Mephibosheth whom she had borne to Saul, and the five sons of Merab the daughter of Saul, whom she had borne to Adriel the son of Barzillai the Meholathite.

And Joab gave the number of the registration of the people to the king; and there were in Israel eight hundred thousand valiant men who drew the sword, and the men of Judah were five hundred thousand men.