I do not agree with his interpretation of the Word became flesh and dwelt anong us. This is a direct reference made by John who states Yeshua/Jesus who is the Word... becoming flesh... and John makes a important distinction to identify that Yeshua/Jesus is the Messiah/Savior by saying the Word (Yeshua) dwelt physically among US ie Him and the disciples. This is why in his epistle 1John chapter one John reiterated this by saying we heard His voice... we looked upon Him... with our eyes and handled physically... the WORD... of life.
Apart from this the man spoke eloquently in explaining DNA... giving simplistic easy to understand... for someone who like myself would not take the time to study this topic.