Ascertaining the what and how of the Church greatly factor into the very purpose of the Church, that is, they essentially answer the question why the Church?
The good news is Christ Jesus is faithful to the end, even to the point of death and through death, with a steadfast and vocal faith in God our Savior for those who cannot do so in their lives any longer on account of their altered state.
Accuracy and quality are the preacher’s responsibility. How affective and effective the sermon may be, of course, belongs to the ministry of the Holy Spirit.
Sermon preparation is a way of life, a necessary discipline, and a serious mediation for the man of God, duly called and ordained to herald the royal proclamation of Jesus.
The Christian sermon is Gospel preaching. We only preach the Gospel. Only the Gospel is the sermon, notwithstanding necessary admonishments of law and requisite exhortations toward sanctification.
This is the litmus test for a Christian sermon: Did Christ have to die upon the cross for me to be able to say this and to say it as His very own message?