'Beginning' in the Bible

exactly as they were handed down to us by those [with personal experience] who from the beginning [of Christ’s ministry] were eyewitnesses and ministers of the word [that is, of the teaching concerning salvation through faith in Christ],

Then beginning with Moses and [throughout] all the [writings of the] prophets, He explained and interpreted for them the things referring to Himself [found] in all the Scriptures.

and that repentance [necessary] for forgiveness of sins would be preached in His name to all the nations, beginning from Jerusalem.