The Bible teaches this. People have an eternal, immortal soul.
Then God said, “Let us make mankind in our image, in our likeness, so that they may rule over the fish in the sea and the birds in the sky, over the livestock and all the wild animals, and over all the creatures that move along the ground.”
This is the written account of Adam’s family line.
When God created mankind, he made them in the likeness of God.