Heb 10:16 This is the covenant that I will make with them after those days, saith the Lord, I will put my laws into their hearts, and in their minds will I write them;
There are two broad categories of people within the realms of Christendom. One group is very large and the other fairly small. The smaller group are the folks that the above scripture alludes to. The other group are religious, with all its many facets. The good, the bad and the ugly but of course in the end its all darkness to those who cannot discern the voice of God. Those who cannot be moved by His Spirit, who do not have the laws of God written upon their hearts and their minds will always stumble and become the antagonist towards those who are so moved.
Let me give you a hypothetical. Abraham has his son of promise. Oh how long he waited. He and Sarah finally had what they knew that God had promised. Of course Abraham had told others of this child and the promises associated with him and the nation that would be born in him. And one day, seemingly out of nowhere, God tells Abraham to take his son and kill him. Now imagine what his closest friends would make of that. Imagine what his own wife would make of that. Can you hear their arguments? “Abraham you’re mad. God would never contradict Himself. You have misheard. Under no circumstances must you do this.”
And here we have the difference between those who know the voice of God and those who merely know truth. It is all true what they would say. Isaac was certainly the child of promise. Everything that God had promised Abraham would come to pass. Yet Abraham knew the voice of God. And in the end, those who shall be led by His Spirit will know the voice of God, for His very will is written upon our hearts. We must obey God even when we do not fully understand. There are plenty of men who only know the truth as it is written, but it has not be written upon their hearts.
The Holy Spirit is not leading them and guiding them and inspiring them to know and understand the words written. Outside of the Holy Spirit there is but a two dimensional understanding of the Scriptures. The revelation of the word of God can only be discerned by the inspiration of the Holy Spirit. Everything else is religion. Common wisdom would say that Isaac should not be taken up the hill. If Abraham had not taken his son up the hill then he would not be the father of faith. Yet, as always, the just shall live by faith. And the deaf? They shall stumble in the darkness.