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
Then Moses took Aaron and his sons; and after washing them with water,
And he who is to be made clean will have his clothing washed and his hair cut and have a bath, and he will be clean. And after that he will come back to the tent-circle; but he is to keep outside his tent for seven days.
Let him put on the holy linen coat, and the linen trousers on his body, and the linen band round him, and the linen head-dress on his head; for this is holy clothing, and before he puts them on his body is to be washed with water.
And after bathing his body in water in a holy place, he is to put on his clothing and come out and give his burned offering and the burned offering of the people, to take away his sin and the sin of the people.
Let the clean person do this to the unclean on the third day and on the seventh day: and on the seventh day he is to make him clean; and after washing his clothing and bathing himself in water, he will be clean in the evening.
And Shallun, the son of Col-hozeh, the ruler of the division of Mizpah, made good the doorway of the fountain, building it up and covering it and putting up its doors, with their locks and rods, with the wall of the pool of Shelah by the king's garden, as far as the steps which go down from the town of David. By his side was working Nehemiah, the son of Azbuk, ruler of half the division of Beth-zur, as far as the place opposite the last resting-places of David's family, and the pool which was made and the house of the men of war.
And you made a place between the two walls for storing the waters of the old pool: but you gave no thought to him who had done this, and were not looking to him by whom it had been purposed long before.
And said to him, Go and make yourself clean in the bath of Siloam (the sense of the name is, Sent). So he went away and, after washing, came back able to see.