'Good Teacher' in the Bible

And behold one man having come to him, said, Good teacher, what good thing should I do so that I may have eternal life?

And as he was going forth on the way, one man having ran to him, and having knelt to him, questioned him, Good teacher, what should I do that I may inherit eternal life?

And a certain ruler questioned him, saying, Good teacher, having done what, will I inherit eternal life?