
Originally Posted by
Kant
I've come across the viewpoint before that time doesn't exist in heaven or that after this life we enter into eternity and that means the absence of time. I'm curious as to where this idea originates from or what scriptures support it.
That view probably comes from a misunderstanding. God exists outside of time, but that doesn't apply to us, departed saints, angels, demons, or Heaven. Only God.

Originally Posted by
Kant
enter into eternity and that means the absence of time.
Eternity means "forever", it doesn't imply an absence of time. The Eternal Kingdom will last forever, but time will no doubt be observed. Perhaps not like it is now (through the movement of the sun), but it will likely be measured in some way.

Originally Posted by
Kant
For what it's worth, I am of the persuasion that time also exists in heaven and that God himself is the only one that is and ever will be outside of time. Since heaven is a place, I believe it was created by God and therefore subject to the constraints of time and space.
As I looked, thrones were set in place, and the Ancient of Days took his seat. His clothing was as white as snow; the hair of his head was white like wool. His throne was flaming with fire, and its wheels were all ablaze.