And God said to Abraham, “As for you, you shall keep my covenant, you and your offspring after you throughout their generations.  This is my covenant, which you shall keep, between me and you and your offspring after you: Every male among you shall be circumcised.  You shall be circumcised in the flesh of your foreskins, and it shall be a sign of the covenant between me and you…”
 Then Abraham took Ishmael his son and all those born in his house or bought with his money, every male among the men of Abraham’s house, and he circumcised the flesh of their foreskins that very day, as God had said to him.  Abraham was ninety-nine years old when he was circumcised in the flesh of his foreskin.  And Ishmael his son was thirteen years old when he was circumcised in the flesh of his foreskin.  That very day Abraham and his son Ishmael were circumcised.  And all the men of his house, those born in the house and those bought with money from a foreigner, were circumcised with him.
– Genesis 17:9-11, 23-27
God dictates to Abraham the sign of belonging to Him – circumcision. The sign is both permanent and painful, yet at 99 Abraham does not hesitate. Abraham is not interested in delaying, calculating the cost, or taking time to pray about it. He knows what it is to belong to the Lord, and he is eager to bear the mark, aware that it involves temporary pain.
We live in a culture that aims to get as much as it can for as little cost or labor as possible. What we will hopefully learn before too many years pass is that there is very little worth having that involves neither cost nor labor. The best things tend to have the highest cost. Yet if they are truly everything they say they are, they make that cost forgettable. One such thing is belonging to the One True God. It is everything He says it is.