By the fruits you shall know the tree
Galatians 5
22 But the fruit of the Spirit is love, joy, peace, forbearance, kindness, goodness, faithfulness, 23 gentleness and self-control. Against such things there is no law.
A soul is a real thing, separate from emotions. Emotions would be an aspect of the mind.
If you want to believe in a purely materialistic universe, then tell me the age of existence itself. I assume you will say infinite. Now this necessitates metaphysics to begin with, but that argument aside, the only way for anything to exist as an event of the infinite is cyclically. The author HP Lovecraft wrote "that is not dead which can eternal lie, and with strange aeons even death may die". If existence cycles on and on forever, universes born and die, then anything that has happened before is destined to happen again. So even in a purely materialistic universe, you must conclude that there exists life after death.
Revelation 1:8
“I am the Alpha and the Omega,” says the Lord God, “who is and who was and who is to come, the Almighty.”