We would have come unto you, even I Paul, once and again; but Satan hindered us. 2:18
Trivia: What prevented Paul from visiting the Thessalonians?
"Comfort the feebleminded, support the weak, be patient toward all men." 5:14
Don't return evil for evil, but be good to yourselves and all others. 5:15
"Prove all things; hold fast to what is good." 5:21