I am telling you what I have seen in the Father’s presence, and you do what you have heard from your father.”
There are a series of contrasts in this verse: I and you, speak and do, and my Father and your father.
There is also a different level of revelation. The Jews do what they have seen from their father, the devil, but Jesus speaks what He has seen in the Presence of God. The devil has been whispering lies into the ears of the Jews. He has been saying, “This man is not from God.” “He is just trying to divert you from the things of God.” and “Kill him.” They are following his whispers, but Jesus is an eye-witness to the things of God and He is telling them exactly what God has shown Him. From whom would you rather hear?