How do we know that Jesus fulfilled the law in the story of the woman caught in adultery?

In this encounter, Jesus upholds the law while also demonstrating divine mercy. The Pharisees brought the woman to Him, fully aware of the law's demand for capital punishment for adultery. However, they overlooked their own sinfulness. Jesus' response, 'He that is without sin among you, let him first cast a stone at her,' reveals His understanding of the law's essence—calling all to recognize their own guilt before judging others. By sparing the woman while simultaneously having the authority to forgive her sins, Jesus illustrates how He fulfills the law through His redemptive work. He didn't dismiss the law; instead, He honored it by embodying the grace that allows for forgiveness when one sincerely repents.