There are 3 components to a foundation for a fruitful preaching ministry. Taken from Acts 6:2-4: 2 Then the twelve called the multitude of the disciples unto them, and said, It is not reason that we should leave the word of God, and serve tables. 3 Wherefore, brethren, look ye out among you seven men of honest report, full of the Holy Ghost and wisdom, whom we may appoint over this business. 4 But we will give ourselves continually to prayer, and to the ministry of the word.
These 3 items are: prayer, knowing God’s Word and daily evangelistic work.
What do great preachers have in common? They know the Bible.
What do the legends of Christian have in common? There were men of prayer.
How do we know them? Because they were continually proactive in their ministry work.
There is no substitute for these 3 items. More details can be added but the first commitment an evangelist needs to make is to these 3 items.