So.... I probably didn't answer the questions as throughly as the person asking them at the group study desired.
I simply said that Jesus was sent to us with a purpose and a plan. The questions fall outside of the plan.
Then there was a brief discussion about when Jesus gained awareness of the plan - all conjecture but many thought it may have been early in his ministry, during the 40 days in the wilderness.
My response (now):
Yes, Jesus would have lived forever, likened to Methuselah or Enoch.
No, a natural death would not meet the criteria for a sacrifice.
Rob
Hello Rob, What you are speaking of in part finds it's answer in what would be known as Covenant Theology.
In particular what you have seen described as the Covenant of Redemption. short answer;
1] The triune God Covenanted among themselves to not only create all things, but to wisely rule and bring to pass whatsoever comes to pass.
2] God as Creator defines all reality, he names and determines what is right and wrong.
3]God creates all life and controls and defines even that.
4] All the members of the Trinity agree to this plan and purpose
5]This Covenant made before the world was, is revealed progressively over time
6] The answers are revealed in scripture when scripture is studied and searched out.
As with everything else, because of sin and rebellion, the work of Satan, and worldly distrtactions people resist God, His revelation, His word found in His people who study scripture. One clear example is some would insist that this "Covenant of Redemption is not directly quoted by that name in scripture, but is only a theological construct. but so is the term Trinity.
So those who object look to confuse the issue { for various reasons}. but they do not help but rather hinder those who would understand.
Take clearly revealed things, and rule out obscure or novel ideas, that contradict what is clearly revealed.