Through history, God has allowed mankind to walk their own paths.
And since the fall, mankind could never walk righteously.
When that happens, mankind will rebel against God, be it consciously or unconsciously.
And God's judgement came, He left remnants for Himself.
The ability of these remnants, is usually reduced from the previous design: such as shorter life-span, language barrier, all the contrary to evolution theory. The body grew weaker and weaker.
Nevertheless, when the chosen ones of God are revealed in the end, I believe our new body would be a glorified one.
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