'Rather' in the Bible

Although she had endured a great deal under the care of many doctors and had spent all of her money, she had not been helped at all, but rather grew worse.

They came and told him, "Teacher, we know that you are sincere. You don't favor any individual, because you pay no attention to external appearance. Rather, you teach the way of God truthfully. Is it lawful to pay taxes to Caesar or not? Should we pay them or shouldn't we?"