From Longman Dictionary of Contemporary Englishassure yourselfassure yourselfformal to check that something is correct or trueassure yourself that Tim waited a moment to assure himself that he was not being followed.assure yourself of I took steps to assure myself of her guilt. → assure
Examples from the Corpus
assure of• Goldwater, a plain-spoken Arizonan, had assured himself of a first-ballot nomination by defeating Rockefeller in the California primary.• As we will see shortly, it is much simpler to assure ourselves of gains from trade if it is true.• He assures himself of my guilt.• Having assured itself of that source, however, doesn't translate into a positive factor - merely a neutral one. 