1)
What do we learn from "Ki Rabim Chalalim Hipilah"?
1.
Avodah Zarah 19b: This refers to a Talmid who is not yet qualified to give rulings, but does so.
2)
What do we learn from "va'Atzumim Kol Harugeha"?
1.
Avodah Zarah 19b: This refers to a Talmid who is qualified to rule, but does not.
2.
Malbim: This shows why one should not veer your heart to her path, and not trust in his virtue that he will not come to sin. She killed Atzumim - Giborim in Torah and Yir'ah. They did not stand in the test. Therefore, do not approach her at all - "v'Al Tikrav El Pesach Beisah" (5:8).