How administered.
RCW 5.28.020
in effectAn oath may be administered as follows: The person who swears holds up his or her hand, while the person administering the oath thus addresses him or her: "You do solemnly swear that the evidence you shall give in the issue (or matter) now pending between . . . . . . . . and . . . . . . . . shall be the truth, the whole truth, and nothing but the truth, so help you God." If the oath be administered to any other than a witness giving testimony, the form may be changed to: "You do solemnly swear you will true answers make to such questions as you may be asked," etc.
An oath may be administered as follows: The person who swears holds up his or her hand, while the person administering the oath thus addresses him or her: "You do solemnly swear that the evidence you shall give in the issue (or matter) now pending between . . . . . . . . and . . . . . . . . shall be the truth, the whole truth, and nothing but the truth, so help you God." If the oath be administered to any other than a witness giving testimony, the form may be changed to: "You do solemnly swear you will true answers make to such questions as you may be asked," etc.
Source: WA Statutes (Official Site)URL: https://app.leg.wa.gov/RCW/default.aspx?cite=5.28&full=trueFetched: 6/28/2026