Quoted from The Supremacy of God in Preaching by John Piper, 45-46.
We should also rely on the Holy Spirit for help in interpreting the Word. Paul said in 1 Corinthians 2.13-14 that he is “interpreting spiritual things to those who are spiritual (that is, those who posses the Spirit). The natural person does not accept the things of the Spirit of God, for they are folly to him.”‘ In other words, it takes the Holy Spirit to make us docile to the Bible. The work of the Holy Spirit in the process of interpretation is not to add information, but to give us the discipline to study well, and the humility to accept the truth we find without twisting it, and often a desperately needed discovery or insight in his providential guidance of our work.
I urge you to be like John Wesley, in this matter of relying on the Spirit in his Word, the Bible. He said, ” O give me that book, At any price, give me that book of God! I have it: here is knowledge enough for me. Let me be a man of one book.”
It is not that reading other books or knowing the contemporary world is unimportant, but the great danger is to neglect the study of the Bible. When you finish seminary and are in the church ministry there are no courses, no assignments, no teachers to make you study. Just you and your Bible and your books. And the vast majority of preachers fall far short of the resolution that Jonathon Edwards made when he was in his twenties: “Resolved, To study the Scripture so steadily, constantly, and frequently, as that I may find , and plainly perceive, myself to grow in the knowledge of the same.”
The really effective preachers have been ever-growing in the Word of God. Their delight is in the law of the Lord and on his law they mediate day and night (Psalm 1.2). Spurgeon said of John Bunyan, “Prick him anywhere, and you will find that his blood is Bibline, the very essence of the text, for his soul is full of the Word of God.” And ours should be too. That is what it means to rely on the gift of the Spirit’s word.