'Ashamed' in the Bible

And see to it that your conscience is entirely clear, so that every time you are slandered or falsely accused, those who attack or disparage your good behavior in Christ will be shamed [by their own words].

but if anyone suffers [ill-treatment] as a Christian [because of his belief], he is not to be ashamed, but is to glorify God [because he is considered worthy to suffer] in this name.