>There is a Christian concept that you love your family and then you love your neighbor
There is no "and then". That is not a Christian concept at all.
Love the Lord your God with all of your heart, all of your soul, and all your mind, this is the first and greatest commandment. The second is like it, love your neighbor as yourself.
The Cross.
Remember, He came not to bring peace but a sword, to turn Father against Son, mother against daughter in law. A mans enemies will be members of his own household.
People like to say blood is thicker than water, but without water blood dries up and dies.
If you love only those who love you, what credit is it to you?
A brother can be your worst enemy, while a friend can be the best brother.