I don't understand what the confusion is all about. Isn't it pretty clear cut from the etymology of the word what it means?
I interpret epiousios to mean, 'that which is of substance', or just 'substantial', from the epi- prefix and the root word 'ousia'.
In Modern Greek, the word 'epiousio' (missing the final -s, in the nominative neuter singular) just means 'the crux of the matter', or more simply just 'that which is relevant'.
I get that the connotation of epiousios may be closer to sustenance in that passage, but I don't see where 'daily' comes from. The last word of that phrase is 'σήμερον', which means 'today' -- is that where the confusion is coming from?
I interpret epiousios to mean, 'that which is of substance', or just 'substantial', from the epi- prefix and the root word 'ousia'.
In Modern Greek, the word 'epiousio' (missing the final -s, in the nominative neuter singular) just means 'the crux of the matter', or more simply just 'that which is relevant'.
I get that the connotation of epiousios may be closer to sustenance in that passage, but I don't see where 'daily' comes from. The last word of that phrase is 'σήμερον', which means 'today' -- is that where the confusion is coming from?
What am I missing here?