Great question you raised.
Before we can answer that we first must know what “preach” means, and how it is used in scripture. We must differentiate between the Biblical meaning of the word, and our modern meaning – vastly different.
In the Bible the word “preach” is usually associated with the word “Gospel”. PREACH THE GOSPEL.
The gospel is:
all that God has done, is doing and will do in His risen Son, Jesus Christ....
When used alone, it stands for the whole of the Christian message.
It encompasses ultimately the entire message of the Bible.
"By this GOSPEL you are saved. …that Christ died for our sins…that he was buried and that he was raised…" I Cor. 15:12 "The GOSPEL...is the power of God for the salvation of everyone who believes." Rom. 1:17
"In the GOSPEL a righteousness from God is revealed, a righteousness that is by faith from first to last." Rom.1:17
Essentially, the gospel is God's rescue plan for the human race. It is the only hope for fallen mankind; and that is good news indeed! The gospel must be preached!
To preach means:
to proclaim, or publish, declare, herald;
In Scripture it refers to a general testimony to all with whom they came into contact.
"preach the Gospel", or something similar is repeated so often in Scripture that it demands our attention. It was an important activity of Christ and His disciples. He sent them out on field assignments "preaching the gospel and healing people everywhere". Lk 9:6 Where did they preach? They went to the towns, roadsides, riverbanks, homes, synagogues, marketplaces, villages, and into foreign territory. Jesus emphasized the importance of this activity when He said, "The gospel must be preached to all nations." Mk. 13:10 That is a gigantic task - much bigger than what can be accomplished on a Sunday morning in church by a very select number of professional people.
Christ has given all believers the "ministry of reconciliation: that God was reconciling the world to himself...and he has committed to us this message of reconciliation. We are therefore ambassadors, as though God has made his appeal through us." 1 Cor. 5:19,20
Paul was passionate about preaching the Gospel. He said, "...I am compelled to preach. Woe to me if I do not preach the gospel!" 1 Cor. 9:16 His preaching was generated from a fire burning in his heart that was set ablaze by God. It came as a result of his own experience of being set free from sin. Paul said, "The grace was given me to preach ...the unsearchable riches of Christ." Eph. 3:7
The word “preach” has been so strongly associated with ecclesiastical hierarchy that we have lost it’s proper meaning. But there is no hierarchy in God’s harvest fields.
"Neither he who plants,
nor he who waters is anything,
but only God, who makes things grow." 1 Cor. 3:7
"How beautiful are the feet of them that preach the gospel of peace and bring glad tidings of good things." Rom. 15:15
"No one who has left home or [family] (i.e. their approval)for the sake of the gospel will fail to receive a hundred times …" Mk 10:29
I consider my life worth nothing to me,
if only I may finish the race
and complete the task the Lord Jesus has given me
the task of TESTIFYING TO THE GOSPEL OF GOD'S GRACE. Ac. 20:24
After mediating on those scriptures, then consider what it means to preach and who are called to do so.
Consider the Samaritan Woman at the well who proclaimed the good news to her village.
Consider those women who first proclaimed Christ’s resurrection. Was that not preaching at its best?
Now consider who should NOT be preaching? What about those who only know ABOUT the good news, but it is not “fire in their bones”? What about those who proclaim a different gospel. (see Galatians)
Just some thoughts for starts.
Diane