extraordinary power from God
The Holy Spirit is able to make the Word as successful now as in the days of the apostles. He can bring in souls by hundreds and thousands as well as by ones and twos. The reason why we are no more prosperous is that we have not the Holy Spirit with us in might and power as in early times.
"If we had the Spirit sealing our ministry with power it would signify very little about talent. Men might be poor and uneducated, their words might be broken and ungrammatical; but if the might of the Spirit attended them, the humblest evangelist would be more successful than the most learned of divines, or the most eloquent of preachers.
"It is extraordinary power from God, not talent, that wins the day. It is extraordinary spiritual unction not extraordinary mental power, that we need. Mental power may fill a chapel but spiritual power fills the church with soul anguish. Mental power may gather a large congregation. but only spiritual power will save souls. What we need is spiritual power."--Chas. H. Spurgeon.
Oswald J Smith, The Revival We Need