>>As for the Atonement, recall the “Passover Lamb without blemish”? Christ bore our sins because he was perfect, because he was sinless<<
He was sinless but was susceptible to sin because of His human side. He did not sin. Satan would not have tried to tempt Him if he didn’t think Jesus was at least capable. That interaction would not have meant anything if He wasn’t. Ya, Ya, I know. I don’t fully understand either but God’s ways are not our ways and God’s thoughts are not our thoughts.
Well, Satan would have done it anyways, because everything he does is doomed to failure. He’s lost, the game is over, but he’s desperately trying to catch up.
The point behind it is to show people what Satan is like, and how he tempts people. Always the lesser over the greater good. Always the good for today over the good for tomorrow.
All I know is that scripture says he was fully man, more than we ourselves are men, as Adam was before the fall. He still could have chosen to sin, as Adam did, but chose not to sin despite the severe suffering to which he was subjected. Intellectual temptation, but not temptation of the sort we suffer in our desires and needs.