The Bible tells us: “If the word spoken through angels [who were used in transmitting the Mosaic law] proved to be firm, and every transgression and disobedient act received a retribution in harmony with justice;

while God joined in bearing witness with signs as well as portents and various powerful works and with distributions of holy spirit according to his will?”​—Heb. 2:2-4.

Were such miracles needed after Christ’s death? Yes, as long as the temple existed in Jerusalem and the requirements of the Mosaic law respecting worship could be carried out, there was a need for God to continue bearing witness that the old Jewish arrangement for sacred service had been replaced by the arrangement centering in Jesus Christ. Therefore, the Most High, through Christ Jesus and by means of holy spirit, gave special powers to his apostles and others.