2 Samuel 4:2-5

2And Saul's son had two men, captains of bands: the name of the one was Baanah, and the name of the other Rechab, the sons of Rimmon the Beerothite, of the children of Benjamin; for Beeroth also was reckoned to Benjamin.

3And the Beerothites had fled to Gittaim, and were sojourners there until this day.

4And Jonathan Saul's son had a son that was lame of [his] feet. He was five years old when the news came of Saul and Jonathan out of Jizreel; and his nurse took him up and fled. And it came to pass, as she made haste to flee, that he fell, and became lame. And his name was Mephibosheth.

5And the sons of Rimmon the Beerothite, Rechab and Baanah, went and came in about the heat of the day into the house of Ishbosheth, who was taking his noonday rest.