I am so sorry that you are experiencing such frightening turmoil right now. I agree 100% with Serafena and LFW....get the kids to a safe place and call 911 to get him to the ER. I doubt he would go on his own....given his state and temperament....so you will need all of the help you can get.
Do everything you can to protect yourself and your children. You must put your safety first, as he is not well and his actions can't be trusted.
I will keep you in my thoughts and prayers tonight...please keep us posted.
I am in agreement with the rest of the group, call 911 and try to get him to a hospital or another safe place for himself. Tyry to get yourself and your kids to a safe place. Your husband is enraged and we don't know what he is capable of.
My prayers are with you, stay strong!