Acts 7:22 when it says "he was mighty in his words and deeds", means he was truthful when he spoke and his deeds we're great. Many contradictions in the Bible but these two passeges aren't one of them. Nabi Musa(alaihi salaam) didn't have a speech impediment, when he was a child he burnt his tounge on a hot peace of coal. A test from the Pharaoh to see if ...
In Acts 1 Peter's conditions for a new apostle are that "one of the men who have accompanied us the whole time the Lord Jesus went in and out among us, 22beginning from John’s baptism until the day Jesus was taken up from us. For one of these must become a witness with us of His resurrection." Acts 1:21-22
So the new apostle was a person who had seen Christ ...
Exodus seems to be silent about the angel. It's a later Jewish tradition, which believes that the angel of presence was God's intermediary to dictate the law to Moses. Please note: that even in the tradition, the law was transmitted, not given, by the angel.
See the non-canonical pseudepigrapha work Book of Jubilees 1:27-29 and 2:1 :
27And He said to ...
Does Catholic Church acknowledge St. Paul the Apostle as consecrated Bishop during Apostolic times?
The answer is YES, if we accept the number of Popes who had chosen the name of St.Paul as their papal name.
Pope Paul I (757–767)
Pope Paul II (1464–1471)
Pope Paul III (1534–1549)
Pope Paul IV (1555–1559)
Pope Paul V (1605–1621)