Note that when filing a declaration in federal court, it's common to begin the declaration by making a reference to 28 U.S.C. § 1746. For example:
"Pursuant to 28 U.S.C.§ 1746, I hereby declare as follows:"
"I, Clarence Darrow, hereby declare under penalty of perjury pursuant to 28 U.S.C. § 1746 that . . . "
28 U.S.C. § 1746 provides that a matter may be supported by an unsworn declaration as being true under the penalty of perjury. The stature specifies that this language should be used:
“I declare (or certify, verify, or state) under penalty of perjury that the foregoing is true and correct. Executed on (date).
So one might begin a declaration like this:
. . . and conclude it his way:
In any event, be sure to include a reference to 28 U.S.C. § 1746.