The Scriptures do not directly answer your question concerning why we have different blood types. However, there are principles mentioned in the Bible that point toward an answer. Genesis 1:27 says, “So God created man in His own image, in the image of God created he Him; male and female created He them.” Psalm 104:24 says, “O Lord, how manifold are thy works! In wisdom has thou made them all: the earth is full of thy riches.” Leviticus 17:11 says, “For the life of the flesh is in the blood.”

These three verses show that God has created mankind, that everything God has done He has done wisely, and that we need blood to stay alive physically. If all of our blood is shed, we will die. Blood is essential for life. Since He has very wisely created us, we can be certain that He has a very good reason for creating the different blood types of A, B, and O, with their various combinations.

When men do not know why God has done something, sometimes they wrongly assume that it has no purpose. Men have made this mistake with the human organs of the thymus, appendix, and tonsils. More recently, all of these organs have been found to have a role in either the lymphatic or immune systems. God has a purpose for everything that He does. In WISDOM He has made everything! One anti-creationist asked, “What use are blood types, which only make blood transfusions difficult?” and called the variety a “flawed design”. Let us not be so foolish. Since we know that God has wisely made us, it is possible that the various blood types will help to preserve the human race if a blood-borne disease attacks a specific blood type. God knows the end from the beginning and we can be sure that there is a very good purpose for blood types, even if He does not specifically tell us. We can fully trust Him that He knew what He was doing when He created the various blood types.

In the question above, the remarks were made, “We came from one father which is Adam. According to science, the blood comes from our father.” Without getting into a lot of detail, I would recommend that the reader go to the American Red Cross website and search “Blood Types.” There is a concise explanation about the various blood types and how our blood type is determined from both of our parents. Thank you for your good question and let us remember that we can trust that God knows what He is doing even when we do not understand why He has done something. (291.10) (DJ)