; but the third is to arrange in what way the things prescribed, or defined, can be fulfilled, so that some one may execute them, and this belongs to the

Powers

. But the execution of the angelic ministry consists in announcing things divine. In the execution, however, of any act, there are some who begin the act, and lead the others, as in singing the precentors, and in battle those who lead and direct the rest; and this belongs to the

Principalities