My husband is depress and I need some advice

Me and My husband has such a healthy relationship and a great bond but recently He gave me a hint that sometimes he gets sad and in his feeling. I don’t know why I never actually check up on him when we are away from each other 🤦🏾‍♀️.But today I did and he said “I'm tired of living I wish there were a way for me to leave this world without pain.” I told myself that sounds like depression. Before i could text him back he said “I love you but I’m going into work now I’ll text you on my break.”So now I’m here trying to get advice on what to do to help him like really help him. I never seen or heard my husband speak like this.I want to him feel better and to be happy with his self. Has anybody been threw something like this ? Do y’all have any tips on how to help your spouse or significant other?