Bobbie, it isn't uncommon for Steps in a family to not get along, so don't feel like you are the only one dealing with these kinds of issues. I know it's sad, and maybe one day if every one puts enough energy into prayer, it would mend itself. But, now, unfortunately, this is a real-life issue that so many people get emotionally injured over it.
Steps go through various negative feelings of jealousy and resentment, and these feelings have to be validated if they are to be addressed properly.
"From stealing, drugs, skipping school, quitting school, being put in jail, sex, and a few other things. My husband gave up and told them all to move out. He will not speak to them and they are not allowed at our home. Before we moved to our new home the house we lived in was in my name so he couldn’t say anything about them visiting, now that we have moved he says they are not allowed there while he is alive, neither when he is dead."
If you look at that above, it becomes easy to see that while the home was in your name, the children were allowed to visit, eventhough he said they weren't allowed to. By him making this decision of the kids not allowing to be there, and yet, they were able to visit because he didn't have any say in the matter ~~~~ contributes in setting the environment for him to be resentful.
I'm not saying you are wrong, I'm merely pointing out how it has come to him feeling so resentful in this situation. He felt totally out of control. Now, with you seeing your children everyday, he's going to become more unreasonable, and the more unreasonable he becomes, the more your children are going to become jealous over your loyalty to your husband.
One big, vicious circle **sighs**
So, what you have to work on is joining them by means of relativity, rather than using up your love for both sides by responding to their verbal assaults on each other.
What I mean is - find something that they need each other for, work on making them feel like they need the other. For example, let's say your husband is a good painter, and one of your kids needs to paint his bathroom. Ask your husband FOR the kid and tell him it's for the kid.
Dialog: James doesnt' know what kind of paint to use in a wet room, his bathroom, honey, he wants to know if he should use flat paint.
At first your husband might bark some remark, but, after time he will begin feel like James (ficticious name) needs him, wants him.
And do visaversa .... find things that are relative, that your husband might need one of your children for, and help to build a bridge towards each other.