Any person who desires it may instead of taking an oath make a solemn affirmation or declaration by assenting when addressed with "You do solemnly affirm (or declare), etc.", as provided in 1-6-102.
Mont. Code Ann. § 1-6-104
Affirmation or declaration in lieu of oath
En
Official source: Montana Code Annotated (Montana Legislature). Reproduced from public-domain Montana statutes; confirm against the official source for the current text. Not legal advice.