1)
Why did he say "Yasih'acha Ficha v'Lo Ani"?
1.
Rashi: Answer my question (in the coming verses) - your mouth will convict you. This is better than if I convict you!
2.
Malbim: I need not proves that you are a Rasha. Your mouth speaks heresy. It clarifies that you are a Rasha!
2)
Why did he add "u'Sefasecha Ya'anu Vach"?
1.
Malbim: Your lips speak heresy in eloquent language. They testify about your evil!
