'Begin' in the Bible

So now, O Lord my God, You have made Your servant king in place of David my father; and as for me, I am but a little boy [in wisdom and experience]; I do not know how to go out or come in [that is, how to conduct business as a king].

"By whom?" Ahab asked. "This is what the LORD says," the prophet replied. ""By the young men who serve as officials within the provinces.'" "Who is to begin the battle?" Ahab asked. "You," the prophet answered.