2 Thessalonians

"He will punish those who do not know God and do not obey the gospel of our Lord Jesus. They will be punished with everlasting destruction and shut out from the presence of the Lord and from the majesty of His power..."  II Thessalonians 1:8-9, NIV 

That's the scary side of why we study - this is the comforting side:

 

"...With this in mind, we constantly pray for you, that our God may count you worthy of His calling, and that by His power He may fulfill every good purpose of yours and every act prompted by your faith. We pray this so that the name of the Lord Jesus may be glorified in you, and you in Him, according to the grace of our God and the Lord Jesus Christ."  II Thessalonians 1:11-12, NIV