According to the American Society for the Positive Care of Children (americanspcc.org), the answer is, “No, the arrival of a step-parent or ‘partner’ is far more likely to mean that the child’s home, which should be their place of refuge becomes a place seething with pent up jealousies, anger, and resentment. Sadly, all too often, mother and daughter, father and son are set against one another by a parent’s new spouse.”
Jesus said, “Think not that I am come to send peace on earth: I am come not to send peace, but a sword. For I am come to set a man at variance against his father, and the daughter against her mother, and the daughter in law against her mother in law. And a man’s foes shall be they of his own household. He that loveth father or mother more than me is not worthy of me: and he that loveth son or daughter more than me is not worthy of me.And he that taketh not his cross, and followeth after me, is not worthy of me.” (Matthew 10:34-38)
We all get to choose who it is that we follow. If you choose to honor your adulterous parents or adulterous children, then you cannot follow Jesus. It is not a true sword that Jesus was talking about, but instead the sword of truth. Do not embrace, endorse, or accept adulterous relationships as family, because they are anything but family! Save the first family!
The Step-Father's Step-Son 