The conflict is seen clearly in John Chapter Eight - between the Pharisees and Jesus Christ. The religion of the Pharisees was based upon that which is physical. "If ye continue in my word, then are ye my disciples indeed; 32. And ye shall know the truth, and the truth shall make you free.
33. They answered him, We be Abraham's seed, and were never in bondage to any man: how sayest thou, Ye shall be made free?." John 8: 31-33
To become saved in Christ requires a spiritual change. "There was a man of the Pharisees, named Nicodemus, a ruler of the Jews:
2. The same came to Jesus by night, and said unto him, Rabbi, we know that thou art a teacher come from God: for no man can do these miracles that thou doest, except God be with him.
3. Jesus answered and said unto him, Verily, verily, I say unto thee, Except a man be born again, he cannot see the kingdom of God.
4. Nicodemus saith unto him, How can a man be born when he is old? can he enter the second time into his mother's womb, and be born?
5. Jesus answered, Verily, verily, I say unto thee, Except a man be born of water and of the Spirit, he cannot enter into the kingdom of God.
6. That which is born of the flesh is flesh; and that which is born of the Spirit is spirit.
7. Marvel not that I said unto thee, Ye must be born again.
John 3: 1-7
The Pharisees claimed to have a chosen status with God because of their physical bloodline. But Christ says they everyone must be born of the Spirit to become saved and of God's elect.
This is where the dialectic of direct opposition to the Truth of Christ begins to work as the anti-thesis to God's Truth as the thesis. And that opposition is often seen in the form of dialogue which is deceptive. If the dispensationalists stuck to presenting their point of view against the Truth stated above in a didactic way that would not work as well as using various tactics of the dialectic within a dialogue.
In fact, the Pharisees in John 8 did make use of some tactics of the dialectic of a somewhat nasty variety, saying "Then answered the Jews, and said unto him, Say we not well that thou art a Samaritan, and hast a devil?......52. Then said the Jews unto him, Now we know that thou hast a devil. Abraham is dead, and the prophets; and thou sayest, If a man keep my saying, he shall never taste of death.
53. Art thou greater than our father Abraham, which is dead? and the prophets are dead: whom makest thou thyself?"
