Depressed husband?!

My husband is severely depressed he hasn’t worked in a year. And he is very sad and has become kinda an angry person. He lashes out at everything and anyone including me and his parents it’s worse in traffic. He’s just not happy and this morning we had a heated argument that’s really could have been avoided if we didn’t raise our voices. I’m so emotionally drained and I know it would be unfair to leave him in his condition but I don’t know what to do. I’m always supportive most times but I am also human and I have feelings.