The very core truth of the gospel is at stake with the Resurrection as per Paul in 1 Corinthians 15 below and other passages which affirm Jesus is still in the flesh now and forever more. Below are my top 12 reasons why directly from Scripture.
1- if Christ is not risen from the dead ( bodily ) your faith is futile
2- if Christ is not Resurrected bodily you are still dead in your sins
3- if Christ is not Raised from the dead bodily you are without hope
4- if Christ is not raised from the dead bodily preaching is useless and so is your faith
5- if Christ is not raised from the dead bodily We are false witnesses
6- if Christ is not raised from the dead we make God a liar
7- The Son/ Word/ God became flesh as per
John 1:14
8- The Son is still in the flesh bodily as per
Colossians 1:19 and
Colossians 2:9
9- The Son remains in the flesh forever, continuously- a completed action in the past ( became flesh) and remains flesh in the present as per
1 John 4:2-3,
2 John 1:7.
10- The gospel message is Jesus died bodily for our sins, was buried bodily for our sins, was raised bodily for our sins giving victory over sin, death and the devil. Ascended into heaven bodily as our High priest who makes intercession for us and will return again bodily at His 2nd Coming.
11- Jesus denied being a spirit, incorporeal. He declared a spirit ( incorporeal ) does not have a body as you see I have, tough and see My flesh and bones.
12- At least a dozen essential/core doctrines of the bible, Christianity, orthodoxy hinge on the Bodily Resurrection/Ascension of Jesus. Ones very salvation/faith does as per Paul in
1 Corinthians 15:14-17.
hope this helps !!!