Read Luke 24:Ezekiel 36:25-28, 39:25-29 Key verse Lk. 24:49 "I will send the Holy Spirit just as my Father promised. But stay here...until the Holy Spirit comes and fills you with power from heaven."
'How can this be?"
The angel told Mary that the Holy Spirit would come upon her. The result would be Christmas. The Holy Spirit brings the power, presence, and activity of God into our lives. In Ezekiel the power of God would cause His people to be changed and transformed into strong believers. These believers would then express God to others because they would then have hearts of flesh, obedient spirits, and a sense of the presence of the Lord.
It was a promise from God, spoken by God through Ezekiel and carried out by Jesus when he told His disciples they would receive the promise of the Father when they got the power from on high.
The Holy Spirit came upon the yielded Mary and He later came upon the surrendered followers of Christ. Power is expressed as coming down on us from above as a way of saying the Greater One is giving power to the lesser one. That Spirit can cause the surrendered followers of Christ to walk in His ways. A promise is conditioned only by the faith to believe it. If we take Christ at his word, that Word becomes flesh in us. His Life is fleshed out in us. Such power is transforming!