Say something or stay out of it

I made my kids stop going to youth group during the church because on 3 separate occasions when the church bus was dropping them off. She doesn't retaliate. She just lets him scream at her. My daughter has a friend that still goes and that friend was spending the night so we went up to the church bus when they were dropping them off to get her so we could go out to eat. I get it. Pastors are human. They are not perfect. But this man was telling his wife "Are you actually stupid! I feel like I'm married to an idiot sometimes!" He is berating her then tells her "Get on the bus! Sit! Stay there!" I'm sorry. Is she a dog? What the fuck. I started to walk over there but one of the other moms said "Stay out of it." And I found out what that fight was over. He was yelling at berating a woman he's supposed to love all because when she made the fliers for church camp during the summer she accidentally put the wrong date. She put one extra day by mistake. I was talking to other moms in my apartments that maybe we should talk to her. She doesn't deserve this. And they pretty much said it's best we stay out of it. That women like that are too blinded by their religion and will not leave their husbands so it's pointless. Would you say something if you saw this?