Your H may never realize that God will fill the void but he may find something spiritual. We all have our own definitions of what the "higher power" is. I realized last year when my MIL asked me how I knew her parents were in heaven, that some people just never seem to find that faith. Others of us have it and then forget for a while.
Listen, if you have to talk yourself into a date, then don't do it. I know in myself that I probably won't be ready for that for a long long time. But as my H has a job that can take his life at any minute, it is something I have had to think about more than once during our marriage. I have always looked at the picture to prepare myself for the reality of not having his income, his help with S, his presence in my life. I guess I just never thought it would be quite this way.
If you focus on the past, you ruin the future. You can only live for today.