Holy Ghost Baptism

Acts 1:1-4

Contemporary English Version (CEV)

1 Theophilus, I first wrote to you about all that Jesus did and taught from the very first ² until he was taken up to heaven. But before he was taken up, he gave orders to the apostles who he had chosen with the help of the Holy Spirit.

³ For forty days after Jesus had suffered and died, he proved in many ways that he had been raised from death. He appeared to his apostles and spoke to them about God’s kingdom. ⁴ While he was still with them, he said: (basically) "..the Father will give you the gift and baptism of the Holy Ghost/Spirit.." A cornerstone of God's work and kingdom (which is ultimate reality) and a greatest miracle of all!
Acts 1:4,5 and 10:47