18 After the priest has had the woman stand before the LORD, he shall loosen her hair and place in her hands the reminder-offering, the grain offering for jealousy, while he himself holds the bitter water that brings a curse.

Read Numbers 5:18 Using Other Translations

And the priest shall set the woman before the LORD, and uncover the woman's head, and put the offering of memorial in her hands, which is the jealousy offering: and the priest shall have in his hand the bitter water that causeth the curse:
And the priest shall set the woman before the LORD and unbind the hair of the woman's head and place in her hands the grain offering of remembrance, which is the grain offering of jealousy. And in his hand the priest shall have the water of bitterness that brings the curse.
When the priest has presented the woman before the LORD, he must unbind her hair and place in her hands the offering of proof—the jealousy offering to determine whether her husband’s suspicions are justified. The priest will stand before her, holding the jar of bitter water that brings a curse to those who are guilty.