'Begun' in the Bible

The Lord said to me, ‘See, I have begun to deliver Sihon and his land over to you. Begin to occupy, that you may possess his land.’

‘O Lord God, You have begun to show Your servant Your greatness and Your strong hand; for what god is there in heaven or on earth who can do such works and mighty acts as Yours?

Who is the man that has planted a vineyard and has not begun to use its fruit? Let him depart and return to his house, otherwise he might die in the battle and another man would begin to use its fruit.