Acts 1:3

1:3 To the same apostles also, after his suffering, he presented himself alive with many convincing proofs. He was seen by them over a forty-day period and spoke about matters concerning the kingdom of God.

Acts 8:12

8:12 But when they believed Philip as he was proclaiming the good news about the kingdom of God and the name of Jesus Christ, they began to be baptized, both men and women.