Numbers 5:19

19 And the priest shall adjure her, and shall say to the woman, If no one has lain with thee, and if thou hast not transgressed so as to be polluted, being under the power of thy husband, be free from this water of the conviction that causes the curse.

Numbers 5:19 Meaning and Commentary

Numbers 5:19

And the priest shall charge her by an oath
Or give her her oath:

and say unto the woman, if no man hath lain with thee:
besides her husband:

and thou hast not gone aside to uncleanness [with another] instead of
thy husband;
which is but another phrase expressive of the same thing, the sin of adultery:

be thou free from this bitter water that causeth the curse;
if this is the case, it shall produce no bitter effects, or bring any curse upon thee.

Numbers 5:19 In-Context

17 And the priest shall take pure running water in an earthen vessel, and he shall take of the dust that is on the floor of the tabernacle of witness, and the priest having taken it shall cast it into the water.
18 And the priest shall cause the woman to stand before the Lord, and shall uncover the head of the woman, and shall put into her hands the sacrifice of memorial, the sacrifice of jealousy; and in the hand of the priest shall be the water of this conviction that brings the curse.
19 And the priest shall adjure her, and shall say to the woman, If no one has lain with thee, and if thou hast not transgressed so as to be polluted, being under the power of thy husband, be free from this water of the conviction that causes the curse.
20 But if being a married woman thou hast transgressed, or been polluted, and any one has lain with thee, beside thy husband:
21 then the priest shall adjure the woman by the oaths of this curse, and the priest shall say to the woman, The Lord bring thee into a curse and under an oath in the midst of thy people, in that the Lord should cause thy thigh to rot and thy belly to swell;

The Brenton translation of the Septuagint is in the public domain.