If we do not "change" into a soul/spirit body then what do we change into? I feel like you're only telling me 1/2 of what you are thinking. If a soul isn't, or can't be, immortal then what is the point? What part of us is with God in the eternity if our soul dies? I just don't understand.
If your premise is accepted and our soul dies, then ......what is the rest of the story?
Your friend......Ping
A true Christian will be resurrected in a spirit body. This will not be a soul as it will not be an air breathing body as described by the Hebrew word, "Nephesh". You will, at that time, be changed into an immortal spirit being. Others....who also were considered "Souls" in their Earthly flesh and blood body will also eventually be resurrected....to death.... in the lake of fire. They, of course, will not receive an eternal spirit body......and they will experience eternal death.
One side note: As an eternal spirit being you will have the ability to manifest yourself as a flesh and blood, air breathing creature.....if you desire. [Hebrews 13:2] Be not forgetful to entertain strangers: for thereby some have entertained angels unawares.
But....until the resurrection, those who have died will rest in their grave....for flesh and blood cannot inherit the Kingdom. [1 Corinthians 15:50]