J. Hudson Taylor

Since the days of Pentecost,has the whole church ever put aside every other work and waited upon Him for ten days,that the Spirit's power might be manifested? We give too much attention to method and machinery and resources, and too little to the source of power.

Jesus

You will receive power 

when the Holy Spirit comes upon you. 

And you will be my witnesses,

telling people about me everywhere—

in Jerusalem, throughout Judea, in Samaria, 

and to the ends of the earth.

Jesus

Therefore, go and make disciples of all the nations, baptizing them in the name of the Father and the Son and the Holy Spirit.

Matthew 28:19 NLT