What did Paul mean (and what do we infer)?

“In the generations gone by He permitted all the nations to go their own ways; and yet He did not leave Himself without witness, in that He did good and gave you rains from heaven and fruitful seasons, satisfying your hearts with food and gladness.” {Acts 14:16-17, NAS}

(1) Prior to Christ, God allowed nations to go their own way. What does that mean?

(2) [Implication] After Christ, God does not allow nations to go their own way. What does that mean?

(3)  Is God more righteous in #1 or #2? Is God more loving in #1 or #2?

Discuss amongst yourselves.