Contradiction with Genesis 7:15
Genesis 7:15 states that animals came to Noah in pairs, implying direct divine intervention, whereas Genesis 6:20 suggests they came by Noah's action.
Genesis 7:15: And they went in unto Noah into the ark, two and two of all flesh, wherein [is] the breath of life.
Contradiction with Genesis 7:2
Genesis 7:2 instructs Noah to take seven pairs of some animals, unlike Genesis 6:20 which states two of each kind.
Genesis 7:2: Of every clean beast thou shalt take to thee by sevens, the male and his female: and of beasts that [are] not clean by two, the male and his female. [by sevens: Heb. seven seven]
Paradox #1
Genesis 6:20 mentions gathering two of every kind of animal for the ark. A possible contradiction or inconsistency is logistical: fitting a pair of every animal species on a single boat and providing for their needs during the flood would have been extremely complex and seemingly impossible given the size constraints and technology of the time.
Paradox #2
The potential contradiction in the concept described by this verse involves the logistical feasibility of gathering and housing all the various animal species on a single vessel. Given the vast number of species in the world and their specific needs for survival, such an undertaking would be practically impossible according to our understanding of biology, ecology, and animal behavior. The diversity and geographical distribution of species pose further challenges to the notion of all animals being brought together in one location.
Paradox #3
Genesis 6:20 might seem to conflict with the logistics of gathering and housing all species of animals in a single vessel, considering the sheer number of species and their needs. This logistical challenge creates numerical inconsistency when trying to fit every kind of bird, animal, and creeping thing into an ark as traditionally described.