The Thessalonian believers followed the good example of their faithful ministers.
After the Covenant of Works/Life resulted in failure and death for humans, God dealt with them on the basis of his grace, or free...
God sent his unique Son in human flesh to be the propitiation for sins, Savior of the world, and life for all who believe.
After God used Philip to save many Samaritans, he sent him to evangelize one who had come from the ends of the Earth.