Dic/ semantic mapping/ 오래도록 빛을 발하다

오래도록 빛을 발하다.

Can it be translated into English as: shed (throw, cast) light for a long time? Maybe not.

To shed light on, throw light on, or cast light on something means to make it easier to understand, because more information is known about it. (= clarify)

• A new approach offers an answer, and may shed light on an even bigger question.

I attempt to map it into an adjective, 'venerable'.