The origin of one from another. A procession is said to be external when the terminus of the procession goes outside the principle or source from which it proceeds. Thus creatures proceed by external procession from the triune God, their Primary Origin. An internal procession is immanent; the one proceeding remains united with the one from whom he or she proceeds. Thus the processions of the Son and the Holy Spirit are an immanent act of the Holy Trinity. An internal, divine procession signifies the origin of a divine person from another divine person (Son from the Father), or from other divine persons (the Holy Spirit from Father and Son) through the communication of numerically one and the same divine essence.