'Commencement' in the Bible

yea, while I am speaking in prayer, then that one Gabriel, whom I had seen in vision at the commencement, being caused to fly swiftly, is coming unto me at the time of the evening present.

at the commencement of thy supplications hath the word come forth, and I have come to declare it, for thou art greatly desired, and understand thou concerning the matter, and consider concerning the appearance.