Del. Code tit. 11 § 1224
A person "swears falsely" when the person intentionally makes a false statement or affirms the truth of a false statement previously made, knowing it to be false or not believing it to be true, while giving testimony or under oath in a written instrument or in an unsworn declaration made pursuant to Chapter 53A of Title 10 or § 3927 of Title 10. A false swearing in a written instrument is not complete until the instrument is delivered by its maker, or by someone acting in the maker""s behalf to another person with intent that it be uttered or published as true. A person who gives an oral and/or written statement while granted the privilege of the floor during a session of the House of Representatives or Senate of the General Assembly, whether or not that person is under oath, gives testimony within the scope of this section.
11 Del. C. § 1224