The coming of the Son of Man will be like what happened in the time of Noah.
These were the events that made all men corrupt in the way the think and do things. Their genes were also corrupted except the house of Noah.
All creation were destroyed by the flood except those those in Noah's ark.
These were the names of Noah's sons.
Only Shem family were pure in their genes. Christ is a descendant of Shem household for his wife is pure.
Christians should keep watch of hybrid creation. This is a sign just like the days of Noah.....