I know that at this moment all you want is your family back but speaking from experience, God might have someone who can be there for you and your kids even more. My ex was mentally and physically abusive but I was so in love that I was willing to put up with it for however long because he had to change someday right?
I was devastated when my husband left me and our 2 kids, my mom even said she thinks I had a nervous breakdown but in the end, I couldn't be more thankful for everything. He married the most amazing woman who treats my kids like her very own and is someone they can trust to always be there. I feel sorry for her though, because my ex never changed.