Acts 14:3

Because God was saving many people, the missionaries stayed on in Iconium "a long time" regardless of opposition that evidently increased gradually. They testified boldly (cf. Acts 13:46) and relied on the Lord Jesus for their success. The phrase "the word of His grace" (Acts 14:3) describes the gospel message stressing the prominence of God’s grace in it (cf. Acts 20:24-32). They did many miracles there too thus confirming their message (cf. Acts 2:43; Acts 4:30; Acts 5:12; Acts 6:8; Acts 8:6; Acts 8:13; Acts 15:12; Galatians 3:5, 2 Corinthians 12:12; Hebrews 2:3-4).

". . . the couplet ’miraculous signs and wonders’ places the ministry of Paul and Barnabas directly in line with that of Jesus (cf. Acts 2:22) and the early church (cf. Acts 2:43; Acts 4:30; Acts 5:12; Acts 6:8; Acts 7:36) in fulfillment of prophecy (cf. Acts 2:19)-as it does also in Acts 15:12. Later when writing his Galatian converts (assuming a ’South Galatian’ origin for the letter), Paul appeals to these mighty works performed by the Spirit as evidence that the gospel as he preached it and they received it was fully approved by God (cf. Galatians 3:4-5)." [Note: Longenecker, p. 432.]