How does the body build a fetus in the womb without making mistakes?
The mother's body immediately places different kinds of cells into exactly the right positions, and the cell-making process stops at precisely the right time. As a result, the fetus develops fingers, fingernails, eyes, and all parts complete, rarely making a mistake such as an overly long finger.
Les explains that at the beginning of pregnancy, the mother's body immediately begins placing all different kinds of cells into exactly the right place. Over the nine-month period, the fetus develops fingers, fingernails, eyes, and everything becomes complete. As the author he cites points out, the body rarely makes a mistake—such as making one finger much longer than it should be—because the cell-making process stops at exactly the right time. Once the baby is complete and the process stops, delivery follows. Les uses this as an analogy for how God has been adding individual believers from around the world to the Church, which is His Body.