But you shall receive power (ability, efficiency, and might) when the Holy Spirit has come upon you, and you shall be My witnesses in Jerusalem and all Judea and Samaria and to the ends (the very bounds) of the earth. *If we live by the [Holy] Spirit, let us also walk by the Spirit. [If by the Holy Spirit we have our Life in God, let us go forward walking in line, our conduct controlled by the Spirit.]