My gut tells me that it is love of God and love of neighbor. Just as Jesus tells us in the Gospel. So how can we be unreconciled with our neighbor (is that a word?) and still approach the cup? The rubrics for the Liturgy say that the priest must be reconciled to all men before serving the Liturgy. In the Old Testament we read that if you bring your sacrifice to the altar and you are not reconciled with your neighbor, then leave it, go see your neighbor and then return and make your sacrifice. So it would seem that this word has a double meaning.
My friend and fellow pilgrim Huw has a much better grasp on the OT then I do perhaps he will weigh in on this topic from an OT perspective.
Okay top of the eighth inning and the Sox are in the lead 5-0 that’s a good thing!
Update: Huw on Love!