invoke

v. (-king) 1 call on (a deity etc.) In prayer or as a witness. 2 appeal to (the law, a person's authority, etc.). 3 summon (a spirit) by charms etc. 4 ask earnestly for (vengeance etc.). [latin voco call]

v. t. To call on for aid or protection; to invite earnestly or solemnly; to summon; to address in prayer; to solicit or demand by invocation; to implore; as, to invoke the Supreme Being, or to invoke His and blessing.