22. And that we may know more completely that the Spirit is Power, we ought to know that He was promised when the Lord said: “I will pour out of My Spirit upon all flesh.” Joel ii. 28. He, then, Who was promised to us is Himself Power, as in the Gospel the same Son of God declared when He said: “And I will send the promise of the Father upon you, but do you remain in the city until ye be endued with power from on high.” S. Luke xxiv. 49.