Mark 4:23-24
23 If any man has ears to hear, let him be listening and let him perceive and comprehend.
24 And He said to them, Be careful what you are hearing. The measure [of thought and study] you give [to the truth you hear] will be the measure [of virtue and knowledge] that comes back to you — and more [besides] will be given to you who hear.
AMP (Amplified version)
23 If any man has ears to hear, let him be listening and let him perceive and comprehend.
24 And He said to them, Be careful what you are hearing. The measure [of thought and study] you give [to the truth you hear] will be the measure [of virtue and knowledge] that comes back to you — and more [besides] will be given to you who hear.
AMP (Amplified version)