According to this Catholic Answers youtube post: youtube.com/watch?v=fA98wto3g2k
Atonement by Jesus - An infinite debt is being paid by our Lord.
“One mortal sin requires an infinite payment.” according to Tim Staples.
My question is: if there was No incarnation. If we were all damned to hell how does our finiteness as human being even if the punishment was eternal be sufficient punishment for us??? Because an infinite payment from an infinite source (the Incarnation of God - in Jesus Christ) is required for reparation.