The Gemara discusses something of the following question:
How can the Almighty purify himself, His Presence can never be contained in any body of water, so how can He ever properly emerge Himself?
The Gemara discusses something of the following question:
How can the Almighty purify himself, His Presence can never be contained in any body of water, so how can He ever properly emerge Himself?
Sanhedrin 39a
אמר ליה ההוא מינא לרבי אבהו אלהיכם כהן הוא דכתיב ויקחו לי תרומה כי קבריה למשה במאי טביל וכי תימא במיא והכתיב מי מדד בשעלו מים אמר ליה בנורא טביל דכתיב כי הנה ה׳ באש יבוא ומי סלקא טבילותא בנורא אמר ליה אדרבה עיקר טבילותא בנורא הוא דכתיב וכל אשר לא יבא באש תעבירו במים
A certain Min said to R. Abbahu: Your God is a priest, since it is written, That they take for me Terumah [wave offering]. Now, when He had buried Moses, wherein did He bathe [after contact with the corpse]? Should you reply, ‘In water: is it not written, Who hath measured the waters in the hollow of His hand? — ‘He bathed in fire,’ he answered, ‘for it is written, Behold the Lord will come in fire.’ ‘Is then purification by fire effective?’ ‘On the contrary,’ he replied, ‘bathing [for purposes of purification] should essentially be in fire, for it is written, And all that abideth not the fire ye shall make to go through the water.’
(Soncino translation)