You don't bother practicing because you remember that last time, breathing didn't do a thing. You pick the baby up when her wails threaten to wake your firstborn. You take your infant to Baby Gymnastics. The first time you leave your baby with a sitter, you call home 5 times. All of our records were lost in the Flood.
Every family tree has some sap in it.
Life is lived forwards, but understood backwards. Despite the differences around the world, despite the different cultures, despite the different skin tones, we are all related. Perhaps to say that if you trace your ancestry back only to the time of Abraham, you live in a divided world because you are either a Jew or a Gentile. But, if you trace your ancestry back even further, we are once again united in the realization that we are part of one human family, created by God to be in fellowship with Him. Our realization of the brotherhood of man ultimately affects not only our relationship with one another, but our relationship with God as well.