'Work of God' in the Bible

When we all fell to the ground I heard a voice speaking in the Hebrew [i.e., Aramaic] language. [It said], 'Saul, Saul, why are you persecuting me? You are only hurting yourself by kicking against the spurs [i.e., opposing the work of God].'

Therefore, let it be known to you that this saving work of God has been sent to the Gentiles; they will listen!”