But you must continue in the things which you have learned and been assured of, knowing from whom you have learned them. 2 Timothy 3:14–15 NKJV
How did Timothy know that the Holy Scriptures were the Word of God? He knew it by divine teaching. He knew of whom he had learned. Here lay the secret. There was a living link between his soul and God, and he recognized in Scripture the very voice of God. Thus it must ever be. It will not do merely to be convinced in the intellect, by human arguments, human evidences, and human apologies, that the Bible is the Word of God; we must know its power in the heart and on the conscience by divine teaching; and when this is the case, we shall no more need human proofs of the divinity of the book than we need a lamp at noonday to prove that the sun is shining. We shall then believe what God says because He says it, and not because man accredits it, nor because we feel it.
“Abraham believed God, and it was accounted to him for righteousness.” He did not go to the Chaldeans, or to the Egyptians, in order to find out from them if what he had heard was in reality the Word of God. No; he knew whom he had believed, and this gave him holy stability. He could say, beyond all question, “God has established a link between my soul and Himself, by means of His Word, which no power of earth or hell can ever snap.”
This is the true ground for every believer: man, woman, or child, in all ages and under all circumstances. This was the ground for Abraham and Luke, for Theophilus, for Paul and Timothy; and it must be the ground for the writer and the reader of these words, else we shall never be able to stand against the rising tide of infidelity, which is sweeping away the very foundations on which thousands of professing Christians are reposing.