When I took a job selling cars the company sent me to a sales training class. One of the first things they taught me proved to be the most valuable - not just for selling but for the rest of life.
What was that? They taught me this premise, "A good deal is a state of mind." In other words, the job of a sales person is to convince a customer that you have given them a good deal. That is a corrollary of another popular saying, "People believe what they want to believe."
During my sales career I found that was indeed true. Some of the customers that I made the most money from were convinced that they had gotten a great deal, while some of the one who beat me down to the last dime where sure that I had robbed them.
I have found the same to be true in ministry. People believe when they and what they want to believe. Some people for whom God has done so much are the ones who struggle to believe. And then there are those who are so quick to embrace God and His Word without much coaxing.
In John 8, Jesus is confronting a group of religious people who are hard to sell. They are face to face with the Truth and they don't want to receive it. Their idea of a good deal doesn't match what He is telling them.
Jesus, as usual, nails the problem when He states, "He who belongs to God hears what God says. The reason you do not hear is that you do not belong to God."
In another place Jesus makes this statement, "If you hold to my teaching, you are really my disciples. Then you will know the truth and the truth will set you free."
Another thing they taught me at sales school was that most customers have already decided that they are going to buy a car when they leave home. What they are looking for is a salesman they can trust. They reminded us that we were selling ourselves as much as we were selling cars.
That is precisely what is happening in this encounter between Jesus and these Jews, He is telling them that truth is not a concept it is a Person - Him. If they buy into Him they will have the truth. It is not what you know ABOUT Jesus that matters it is knowing HIM and buying into HIM. The truth that sets you free is HIM! And they were staring right at Him.
When you are ready to buy into Jesus you will know truth. If you are ready to let Him transform your heart and mind you will sell out to Him. Then you will know that you have found a great deal!