invocate

Invocate, in′vo-kāt, v.t. to invoke or call on solemnly or with prayer; to implore.—n.

The reason is, because by whomsoever we swear, him we profess to be our God, and invocate him as witness of our heart's uprightness, and honest meaning in the thing sworn, according as it is understood by both parties, and as avenger if we prove false.

“Do you invocate the blessed Mary and the saints, and trust to their merits and intercession?”

In the tenth Sonnet in this book, which is numbered as the 38th in Thorpe's arrangement, Shakespeare refers to Chapman as a rhymer in the lines: "Be thou the tenth Muse ten times more in worth Than those old nine which rhymers invocate."

Be thou the tenth Muse, ten times more in worth Than those old nine which rhymers invocate; And he that calls on thee, let him bring forth Eternal numbers to outlive long date.