'Undergarment' in the Bible

He shall put on the holy linen tunic, and the linen undergarments shall be next to his body, and he shall be belted with the linen sash, and dressed with the linen turban (these are the holy garments). He shall bathe his body in water and put them on.

When I heard this, I tore my clothing and my robe [in grief], I pulled out some of the hair from my head and my beard, and sat down appalled [at the shame of it].

At the evening offering I arose from my [time of] humiliation and penitence and having torn my clothing and my robe, I fell on my knees and stretched out my hands to the Lord my God,