Here are the world famous words of John 3:5:
“Jesus answered, Verily, verily, I say unto thee, Except a man be born of water and of the Spirit, he cannot enter into the kingdom of God.”
Nicodemus had a hard time accepting this, and Jesus gave him a jolting rebuke, “Art thou a master of Israel, and knowest not these things?”
But where in the Old Testament was Nicodemus to understand these spiritual realities desperately needed for the Jewish people, passages crying out for the solution of an efficacious birth of water and spirit?
As one of the passages that intertwines the (1) spiritual washing for heart cleansing and (2) purging breath for life renewal in the Old Testament, please let me suggest also the study of Isaiah 4. Personally examine verses 3 and 4 of the chapter.
“And it shall come to pass, that he that is left in Zion, and he that remaineth in Jerusalem, shall be called holy, even every one that is written among the living in Jerusalem: When the Lord shall have washed away the filth of the daughters of Zion, and shall have purged the blood of Jerusalem from the midst thereof by the spirit of judgment, and by the spirit of burning.”
I have never seen this connection of Isaiah 4 and John 3 proposed by any of the biblical commentaries in my possession. But that it is not to say that I am introducing something unique and never been proposed by true scholars. (Most everything that I find as new has already been discussed before.)
I am just excited that the Spirit has lead me this week to some interesting parallels between two chapters that are the central focus of my study and meditation. How does one enter the kingdom of God in John 3:5? There must be a supernatural birth of hudatos and pneumatos. How is one “written among the living” in Isaiah 4:3? There must be a divine work of rinsing and ruach.
Obviously, a scholar like R.C.H. Lenski would not accept my interpretation of hudatos in John 3:5 severed from literal water baptism, but all can see that his ecclesiology (not his doctrine of justification in soteriology) is heavily entrenched in the Lutheran’s sacramental baptism by sprinkling.

