i have never heard your use of the phrase, perhaps it is currently only used in extremely formal italian. it rings somewhat archaic.
'ti rendi conto?' = 'do you grok that?'
your use may also be religious, as in final reckoning, in fact our word reckon seems rooted in the italian, via reconnaissance.
recognition is an interesting offshoot, when mere cognition insuffices, do it again! ~"When an inner situation is not made conscious, it appears outside as fate." Karl Jung~