Then said I, Lo, I come: in the volume of the book it is written of me, Ps 40:7

To preach the gospel, is to set the auditor, the listener on the sidelines, to observe the person and work of Jesus the Christ. Gospel preaching is not calling the sinner to doing, but compels him to consider Him, who has done it all.
Heb 12:1-3 

Gospel preaching, exalts Jesus Christ, as the message of all the Holy scripture, and it sets the listener strait as to his non-contribution to the great work of eternal redemption.
Heb 1:1-3 

When the gospel has been preached effectively, what has occurred can be best described by Luke 4: 17-22. The minister, gives the book to Jesus, by the Spirit of God, and He preaches Himself, to the people. And when the worship is done, everyone is looking at Jesus, not the minister, nor themselves. Glory be to God, What a great preacher!  

This is the Work of the Holy Ghost in the sacred ministry of gospel preaching!
John 16:13-15 

The Person of Christ, and the Work of Christ, is loved by all who have been called and given eyes of faith to see in Him, the glory of God. They marvel, wonder, and revel in this one mighty to save, all by Himself! Isa 63:1-4 

And this is the very point at which false apostles and ministers of Satan seek to steal God’s glory and cause eternity bound sinners to lose their way, by calling them to exhortations of obedience and duty, self righteousness and good works, which they can never perform aright, until Christ is preached in power, and the grace of God has entered into the soul, liberating them, by Christ, in regeneration, to respond  by faith, in love and service, which is the fruit and consequence of  the power of the GOSPEL, Alone!