This adjective describes something that bears fruit or produces crops, whether literal plants or metaphorical productivity. In Acts 14:17, Paul tells the Lycaonians that God 'did not leave himself without witness, doing good by giving you rains from heaven and fruitful (karpophorous) seasons.' The term describes agricultural fertility—seasons that produce harvest, not drought or famine. God's providence in nature serves as testimony to his existence and goodness even among pagans who lack special revelation. Creation's fruitfulness witnesses to the Creator's benevolent power.