How do we know Jesus is our advocate with the Father?

1 John 2:1 states that if anyone sins, we have an advocate with the Father—Jesus Christ the righteous. This highlights the assurance believers have; Jesus stands in our defense before the Father, acting as our permanent High Priest. His work means that every sin is met with grace, and He serves by presenting His own blood, not the blood of animals, thus fulfilling the requirements of both justice and mercy. Such advocacy underscores the significance of Christ's sacrificial work on behalf of the elect.