1) Pre-existence: Influenced by Plato’s teaching, it holds that souls exist before the creation of the body. God created all human souls at the same time and keeps them in a “warehouse of souls”. At the moment of conception God “attaches” a soul to a person. This view lacks Biblical support.
2) Creationism: God creates a “fresh” soul within each human embryo at or some time shortly after conception.
3) Traducianism: This theory teaches that the soul is created in and with the body by the parents. While God is the ultimate creator of all things, he uses people intermediately or as secondary causes. The soul is in some way generated by way of the act of reproduction and comes into being at the time of conception.
4) Generationism: When a distinction is made between the terms Traducianism and Generationism, the former denotes the materialistic doctrine of the transmission of the soul whereby parents generate from inanimate matter both body and soul of a child.