Do you really believe that a person is sincere after lying to you seven times in a day??? It has not so much about the number as about the deceit and sincerity.
Hello again Tantalon, as I said earlier, insincerity most often happens right out of the starting gate, but I can also imagine instances where someone could choose to sin multiple times in the same day and then sincerely ask for forgiveness multiple times as well.
That said, I agree
(with the point you made in your opening, rhetorical question) that the Lord's 7x/day and/or 491x/lifetime command seems like an outrageous scenario, but I think ~outrageous~ is what the Lord was going for when He gave us those numbers in this case
Likewise, my earlier point
(about these two passages on forgiveness) was less about the number of times that a person might ask us for forgiveness (and that we are then expected to forgive them), and more about the fact that, in Christ, we are to sincerely forgive others ~WHENEVER~ they ask us to, no matter how many times they ask
(and/or how sincerely they ask), in a day, or in a lifetime.
As to the matter of sincerity in all of this (as Christians), unless we know for a ~fact~ that the person asking us for forgiveness is not being sincere
(and perhaps, even when we do), we are to forgive them as commanded, because God is their judge in such matters
(the motivations of their heart), not us.
I hope that explains my POV a little more clearly (?)
God bless you!
~Deut
p.s. - I'm in the middle of an ongoing study about Biblical forgiveness, and I have come to believe (so far) that most modern Christians choose to seek it, and particularly, offer it, for the wrong reason/reasons, so thank you for starting this thread