The Gospel of John chapter 8 is like the terms and conditions for God’s covenant through Christ, while the covenant itself came later - the crucifixion. The woman caught in adultery is like the definition of terms for you and I. The “he who is without sin cast the first stone” is the sample of what Christ, the Son of Man has on offer - able to negotiate a way out even for a convicted felon on death row - on condition they go sin no more and trust His continuing support forever. Details come later - terms are as follows: You believe He exists, then you hold to His way, His rules, His sayings, His teachings. He leads you to truth. Truth sets you free from the sinning that could get you killed, that could lead to a fatal demise. That means lying too. Lying is prime example of what you, I, need freeing from to become a permanent child of God (only kind there is). Then soon after giving this formal statement of intent, the covenant is sealed and put into force by His crucifixion. God shows good faith by the resurrection, a promising turn of events for us all raising our prospects anew as a kind of rebirth coming directly from God Himself, the Father Himself. Now the Holy Spirit has been given us because Jesus took His completed victory back to heaven, to God, mission accomplished. Not bad at all.
