Q. Does it matter if children see their parents argue?
A. It unsettles the children and destabilises the home. If parents disagree, and there is no married couple who don’t from time to time, they should still try to present a united front to their children.
There is a Torah law about the stubborn and rebellious son. The parents declare, “This our son is stubborn and rebellious; he does not hearken to our voice” (Deut. 21:10). The use of the phrase “our voice” suggested to Rabbi Judah that if the father and mother do not speak with one voice, the law does not blame the child for being stubborn and rebellious (Sanh. 21a).