"But we have this treasure in earthen vessels, that the excellency of the power may be of God, and not of us" (2 Corinthians 4:7)
A sharp contrast is observable between Spirit-filled Christians of Paul's time and many who claim to be filled with the Spirit today. Paul's converts received the Spirit by faith to be sure, but they actually "received" Him; thousands now go through the motion of taking Him by faith, and believe they do so take Him, but show by their continued feebleness that they do not know Him in real power.
And unless they see it differently later and decide to go through the hard way, they are fated to spend the rest of their lives in secret disappointment.
Let it be remembered that no one ever received the Holy Spirit's power without knowing it. He always announces Himself to the inner consciousness. God will pour out His Spirit upon us in answer to simple faith, but real faith will be accompanied by deep poverty of spirit and mighty heart yearnings.
The essential condition of the baptism of the Holy Spirit is to yield everything to God, even the things that in themselves may be harmless. Why? For no other reason than to prove our will is wholly laid down and that God is all in all.
~A. W. Tozer~