In 1 Thessalonians, Paul compares him and his colleagues to infants, nursing mothers (or nurses), and fathers (2:7 [textual variant acknowledged], 8, 11).
Also, Paul says he tried to travel to Thessalonica, but “Satan thwarted us” (2:18)—a situation which all Christians in my circles would have attributed to God’s will. Both can be true, but it’s interesting which the Apostle explicitly cites.