Matthew 17:25-26
He replied, "Yes, [He does]." And when Peter entered the house, Jesus spoke to him first, [i.e., without waiting for Peter to tell Him what he had said to the tax collectors], saying, "What do you think, Simon? From whom do earthly kings collect custom duty and taxes? From their children or from strangers?"
John 8:35
Now the slave does not remain part of the family forever, [but] the son does.
1 Corinthians 6:6-7
But [instead], a brother goes to court against his brother, and that in front of an unbelieving [judge]!
Galatians 6:10
So then, we should do the right thing toward every person whenever we have the opportunity, and especially toward people who are part of God's family [i.e., those making up "the faith"].