Your faith in God is corrupt; you deny what God himself says about the sacredness of oaths (Leviticus 5:4), and you willingly tolerate (and even embrace) those who violate their oaths. Of course, you'll probably now try to make some argument that the Bible doesn't really mean what it says either.
I support him, because he believes what I do about issues that are the most important
In other words, neither of you think keeping an oath is even relevant to the issue. You have no fundamental principles. You are neither hot nor cold. God says your kind makes him vomit (Rev 3:16).