Did Adam and Eve have belly buttons?
First, you should not be worrying about how someone else’s mid-section looks!
The Bible teaches modesty, and Cain, Abel, and Seth would probably not know the answer to that question, because their parents would have been modestly covered. I Timothy 2:9,10 says, “In like manner also, that women adorn themselves in MODEST APPAREL, with shamefacedness and sobriety; not with broided hair, or gold, or pearls, or costly array; But (which becometh women professing godliness) with good works.” Children were warned about trying to see their parent’s nakedness. Deuteronomy 27:16 says, “Cursed be he that setteth light by his father or his mother. And all the people shall say, Amen.”
God could have created Adam and Eve with a navel, if there was a purpose for it. But in regard to a normal birth, Adam and Eve would not have needed a navel for that, because neither of them was born — they were both created directly by God. Genesis 2:7 says, “And the LORD God formed man of the dust of the ground, and breathed into his nostrils the breath of life; and man became a living soul.” Genesis 2:21-23 says, “And the LORD God caused a deep sleep to fall upon Adam, and he slept: and he took one of his ribs, and closed up the flesh instead thereof; And the rib, which the LORD God had taken from man, made he a woman, and brought her unto the man. And Adam said, This is now bone of my bones, and flesh of my flesh: she shall be called Woman, because she was taken out of Man.” Unless God had a specific purpose in creating them with navels, then they would not have had them.
God has created you for a special purpose. Have you discovered it yet? Revelation 4:12 says, “Thou art worthy, O Lord, to receive glory and honour and power: for thou hast created all things, and for thy pleasure they are and were created.” Until a person repents of his sin and places his total trust in the Lord Jesus Christ, he or she will never find true fulfillment in life — there will be an emptiness that just cannot be satisfied with the things of this world.