osphys

(Translation from NRSV with a few modifications for a more literal meaning)

Matthew

3: 4	Now John wore clothing of camel's hair with a leather belt around his loins (osphys), and his food was locusts and wild honey.

Mark

1: 6	Now John was clothed with camel's hair, with a leather belt around his loins (osphys), and he ate locusts and wild honey.

Luke

12: 35

Let your loins (osphys) be girded about, and your lights burning

Acts

2: 30

Since he was a prophet, he knew that God had sworn with an oath to him that he would put one from a fruit of his loins (osphys) on the throne.