Ann,
I really feel for you.
They will almost certainly do a bone scan as well as the biopsy, and it's very difficult to give advice until you have the result of both of those. You are facing the unknown at the moment, both because it's all new to you, and because until you have those diagnostic results, we don't know which of several different treatment paths your husband will be following. Facing the unknown is scary. When your diagnosis is known, your consultants will tell you what treatment options they recommend, and we can give you loads of advice too. The future will become less unknown and less scary as you see what your treatment options are and start deciding which way to go, which marks the start of taking back control of your lives.
At the moment, try to support each other. It sounds like your husband has stated his main fear, and a perfectly understandable one in the circumstances. Everyone in this forum has been through this personally or with a partner, but as you get to know more about the disease, you realise you aren't finished.
As Flexi said, order a copy of the Toolkit from this site, so you have it ready for use when have your full diagnosis.
Would love to give you all a big hug,
Andy.