1 Thessalonians 1:5

ὅτι = “inasmuch as”. τὸ εὐαγγ. ἡμῶν, the gospel of which the apostles, and by which their hearers, were convinced. As the καθὼς clause indicates, πληροφ. must here denote personal conviction and unfaltering confidence on the part of the preachers. The omission of the ἐν before πληρ. throws that word and πνεύματι together into a single conception, complementary to δυνάμει, which here has no specific reference to miracles, but to the apostles' courage (1 Thessalonians 2:2), honesty and sincerity (1 Thessalonians 1:4-5), devotion (1 Thessalonians 1:7-8), earnestness (9), and consistency (10). The effect of the Spirit on the preachers is followed up (in 1 Thessalonians 1:6) by its effect on the hearers; and this dual aspect recurs in 1 Thessalonians 1:9 (we and you). ἐν (om. Blass) ὑμῖν = “among you”.