Dr. Jennifer Rivera discusses the further transformation of the skin as the baby develops in the womb. The outside layer of the baby's skin is smooth until around week 10 when a deeper layer of skin starts growing faster than the layers above it, making it buckle and fold. God designed the patterns of raised, ridged skin on fingers and toes, giving us a unique identifier that also serves a purpose. This special gift from God will remain unchanged for a lifetime; and it reflects how we are fearfully and wonderfully made.
As told in Job 37:7, "He seals up the hand of every man, that all men whom he made may know it."