1. PRIDE, arrogance, the foundation of SO many of the other sins,
2. anger
3. greed
4. gluttony
5. envy
6. lust
7. sloth
I recognize a few there myself!
Only a few? Sadly, I am or was, familiar with all of them. Of course, I’m the chief among sinners, St. John Chrysostom to the contrary notwithstanding.
Well aside from a dispute over Biblical canon, the protestants recognize the “7 deadlies” as well. Many great men from both persuasions have won many to the Lord so I’m not into disputes between Catholic or Protestants. The Lord Jesus when he rules out of Jerusalem(and not Rome) will correct a great many distortions and will create a situation as the Bible says “No more will they say to one another “Know the Lord”!” For the knowledge of the Lord will cover the Earth as waters cover the sea!
The deadliest sin is the rejection of his Torah.
The first “protestants” were the Netzerim that rejected Constantine’s rejection of The Way. They are the only true protestants.
All the rest are just as “catholic” and lost as Rome.