22 This husband had not yet succeeded to those five husbands in that woman. And where he does not succeed, error sways. For when the soul has begun to be capable of reason, it is ruled either by the wise mind or by error: but yet error does not rule but destroys. Wherefore, after these five senses was that woman still wandering, and error was tossing her to and fro. And this error was not a lawful husband, but a paramour: for that reason the Lord says to her, “You have well said, I have not a husband.
For you have had five husbands.” The five senses of the flesh ruled you at first; you have come to the age of using reason, and yet you are not come to wisdom, but art fallen into error. Therefore, after those five husbands, “this whom you now have is not your husband.” And if not a husband, what was he but a paramour? And so, “Call,” not the paramour, but “your husband,” that you may receive me with the understanding, and not by error have some false notion of me. For the woman was still in error, as she was thinking of that water; while the Lord was now speaking of the Holy Ghost. Why was she erring, but because she had a paramour, not a husband? Put away, therefore, that paramour who corrupts you, and “go, call your husband.” Call, and come that you may understand me.
Source: Tractates on the Gospel of John (New Advent)