God fills all things; the water of forgetfulness is a myth
Eustathius opens his treatise by addressing Pythagorean and Platonist philosophers, first establishing that God is not confined by place, then attacking their myth of the water of forgetfulness.
God fills all things and is limited by no one. For the one who is not limited by place will certainly be in every place, according to the hymnody of David. If he were said to be outside some place, he would necessarily be limited by that very place of which he is deprived. Being wholly present in all things, then, he does not move from one place to another, since he fills all things.
The divine is not subject to fixed circumscriptions of laws and times.
But since they clearly know that they are caught by this, they change course and fabricate the water of forgetfulness, which they say each person drinks and thereby forgets the births of their former lives. That these things are mythical and far from philosophy, no one of sound mind seems to be ignorant. For what do we say, Pythagoreans and Platonists? Have you yourselves taken and drunk the water of forgetfulness?
Greek
De anima contra philosophos (ap. Joannem Damascenum, Sacra parallela) (fragmenta) ΠΕΡΙ ΨΥΧΗΣ ΚΑΤΑ ΦΙΛΟΣΟΦΩΝ 1 Ὁ Θεὸς τὰ πάντα πληροῖ ὑπ' οὐδενὸς περιοριζόμενος· ὁ γὰρ ὑπὸ τόπου μὴ περιοριζόμενος πάντως ἐν παντὶ τόπῳ κατὰ τὴν τοῦ (∆αυῒδ) ὑμνολογίαν ἔσται· εἰ γὰρ ἔξω λέγοιτο τόπου τινός, ἀνάγκη περιορίζεσθαι αὐτὸν ὑπ' ἐκείνου οὗπερ στερίσκεται· ὅλος οὖν ἐν πᾶσι γινόμενος, οὐδαμῶς ἐξ ἑτέρων εἰς ἑτέρους μεθίσταται τόπους τὰ πάντα πληρῶν. 2 Οὐ νόμων καὶ χρόνων ῥηταῖς τὸ θεῖον ὑπόκειται περιγραφαῖς. 3 Ἀλλ' ἐπειδὴ σαφῶς ἴσασιν ἁλισκομένους ἐντεῦθεν ἑαυτοὺς, μεταβαλλόμενοι πλάττουσιν τὸ τῆς λήθης ὕδωρ, ὅ φασιν πίνοντας ἑκάστους τὰς τῶν οἰκείων βίων γεννήσεις ἀμνημονεῖν. Ὅτι δὲ ταῦτα μυθώδη καὶ πόρρω φιλοσοφίας ἐστὶν, οὐδεὶς τῶν εὖ φρονούντων ἔοικεν ἀγνοεῖν. Τί γάρ φαμεν, ὦ Πυθαγόραι καὶ Πλάτωνες· αὐτοὶ τὸ ληθοποιὸν ὕδωρ πεπώκατε λαβόντες;