Reference: Baths
Easton
The use of the bath was very frequent among the Hebrews (Le 14:8; Nu 19:19, ect.). The high priest at his inauguration (Le 8:6), and on the day of atonement, was required to bathe himself (Le 16:4,24). The "pools" mentioned in Ne 3:15-16; 2Ki 20:20; Isa 22:11; Joh 9:7, were public bathing-places.
See Verses Found in Dictionary
And Moses brought Aaron and his sons, and washed them with water.
And he that is to be cleansed shall wash his clothes, and shave off all his hair, and wash himself in water so that he may be clean. And after that he shall come into the camp, and shall stay outside his tent seven days.
He shall put on the holy linen coat, and he shall have the linen breeches on his flesh, and shall be girded with a linen girdle, and with the linen miter he shall be dressed. These are holy garments. And he shall wash his flesh in water and put them on.
And he shall wash his flesh with water in the holy place, and put on his garments, and come forth and offer his burnt offering, and the burnt offering of the people, and make an atonement for himself and for the people.
And the clean person shall sprinkle on the unclean on the third day, and on the seventh day. And on the seventh day he shall purify himself, and wash his clothes, and bathe himself in water. And he shall be clean at evening.
And the Fountain Gate was repaired by Shallum the son of Colhozeh, the ruler of part of Mizpah. He built it and covered it, and set up its doors, its locks, and its bars, and the wall of the Pool of Shelah by the King's Garden, and to the stairs that go down from the City of David. After him Nehemiah the son of Azbuk, the ruler of the half part of Beth-zur, repaired across from the tombs of David, and to the pool that was made, and to the house of the mighty men.
You also made a reservoir between the two walls for the water of the old pool; but you have not looked to its Maker, nor saw Him who formed it long ago.
And He said to him, Go, wash in the pool of Siloam (which translated is Sent). Therefore he went and washed and came seeing.