How much time will I be serving for criminal threats and assault with deadly weapon?

I know my charges are serious. It started off with a road rage and ended up resulting with me and the other driver cutting each other off. He clips my left driver side mirror off and takes off and I follow him to a gas station. He tries to leave but I didn't allow him to. I didn’t get out of my car and physically touch him but instead I verbally assaulted him. I told him i was going to kill him but I didn't really mean what I said. It was just all out of anger that those words came out of my mouth which got me into a lot of trouble. Does this mean i will be facing serious time in jail or prison?