His witness; the apostles were in a more special manner Christ's witnesses; as Luke 24:48 1 Thessalonians 1:7 Acts 1:8; God giving them extraordinary gifts, not for their own sakes chiefly, but to profit others withal; as the tree bears not fruit, nor the field yields its increase, for itself. Of what thou hast seen and heard; not that St. Paul's commission extended only to the publishing this wonder at his conversion: for he was intrusted with the gospel, and had that treasure in his earthen vessel: but this miracle is expressly mentioned, because it was unto him and others a great confirmation of the truths which he believed himself, and recommended to the faith of others. And therefore in the course of his ministry he mentions this frequently; as here in this place, and before king Agrippa, Acts 26:16 1 Corinthians 9:1; as also 1 Corinthians 15:8.
Related Commentaries of Acts 22:15
Acts 22:15
15 For thou shalt be his witness unto all men of what thou hast seen and heard.