Palamas on the "eminently personal" "causality [(i.e. monarchy)] of the Father in God"

"When God was conversing with Moses, He did not say, 'I am the essence', but 'I am the One Who is.'  Thus it is not the One Who is who derives from the essence, but essence which derives from Him, for it is He [(the Father)] who contains all being in Himself."

καὶ τῷ Μωυσῇ δὲ χρηματίζων ὁ θεὸς οὐκ εἶπεν « ἐγώ εἰμι ἡ οὐσία », ἀλλ' « ἐγώ εἰμι ὁ ὤν »·  οὐ γὰρ ἐκ τῆς οὐσίας ὁ ὤν, ἀλλ' ἐκ τοῦ ὄντος ἡ οὐσία·  αὐτὸς γὰρ ὁ ὢν ὅλον ἐν ἑαυτῷ συνείληφε τὸ εἶναι.

     Gregory of Palamas, Triads III.ii.12; Gregory Palamas:  the Triads, ed. John Meyendorff, trans. Nicholas Gendle, Classics of Western spirituality (Mahwah, NJ:  Paulist Press, 1983), 98.  Greek from the critical edition also ed. Meyendorff (Grégoire Palamas: Défense des saints hésychastes: introduction, texte critique, traduction et notes, ed. Jean Meyendorff, Spicilegium sacrum Lovaniense études et documents 30 (Louvain:  « Spicilegium Sacrum Lovaniense »Administration, 1959), 665 ll 16-19).  I was put onto this by Michel Stavrou, "La théologie trinitaire néo-patristique de Jean Zizioulas:  vers une ontologie de la person," Revue des sciences religieuses 89, no. 4 (2015):  492-493 (481-507).   The heading is from p. 491.