When does a human being become a person?

I had an online discussion with a person regarding abortion and what one would term the “product of conception.” I call it a baby, a human being, a person, from its very inception. My antagonist friend stated, “Just because you call something a baby, doesn't make it so. A person is not the meat. It is the personality, which only develops gradually after birth.” So when does the one become a person? Apparently to the secularist it is when the child develops his or her personality. That is, frankly, hogwash. Here is what I wrote in response:

It is a scientific fact, you, I, and every human being, that we were once a fertilized egg, and over time we developed physically, emotionally, mentally prior to, and subsequent to birth. The developing human being is a person. As the person develops and matures, so does the personality. A human being is still a person, no matter how small, no matter at what stage of development, inside or outside the womb. You cannot distinguish, other than at conception, when a person is a person.

The thing that distinguishes man from animals is the soul, the human nature that we all have. Talk about deniers of truth and reality! The soul can be defined as “A person's moral or emotional nature or sense of identity.” Animals have a limited (if any) capacity to think and are driven primarily by instinct and self-preservation, whereas man can think and reason conceptually. Man can create, animals cannot.

Like it or not, believe it or not, man was created in the image of God. We are the crown of His creation. He designed each of us to have free will and a conscience, unlike the rest of the animal kingdom. We can choose between right from wrong. We can either accept or reject Him.