'Mean' in the Bible

So then, was I indecisive or capricious when I was [originally] planning this? Or the things I plan, do I plan in a self-serving way like a worldly man, ready to say, “Yes, yes” and “No, no” [at the same time]?

But [as surely as] God is faithful and means what He says, our message to you is not “Yes” and “No” [at the same time].