Welcome and thank you for you continued contributions. What you're describing is considered a "Signature" on a post and they are highly discouraged in Stack Exchange platform. You're more than welcome to edit your profile page to include "Thank you and as always, God Bless" which everyone will see when they roll over your name or visit your profile. This isn't an attempt to stifle anyone's free speech but simply a rule set forth on this site.
Furthermore, engaging in "edit wars" where you constantly put back something edited out is also discouraged and against site rules. Content on Ask Ubuntu is community managed, like a wiki, which is another reason we don't allow signatures in a post. They are simply noise when we want to promote signal.
We appreciate you adhering to these rules going forward. If you find this unsatisfactory feel free to use the "contact us" link at the bottom to bring this up with the StackExchange admins