Insist

Webster's Dictionary of the English Language

·vi To stand or rest; to find support;

— with in, on, or upon.

II. Insist ·vi To take a stand and refuse to give way; to hold to something firmly or determinedly; to be persistent, urgent, or pressing; to persist in demanding;

— followed by on, upon, or that; as, he insisted on these conditions; he insisted on going at once; he insists that he must have money.