How do we know that God's adoption is a legal matter?

The legal aspect of adoption is paramount in understanding our standing before God. When we are adopted as His children, it comes with the legal backing that Christ fulfilled the demands of the law on our behalf. Galatians 4:4-5 clearly states that God sent His Son to redeem those under the law so that we might receive adoption as sons. This signifies that the legal barriers are removed, allowing for a genuine and lawful adoption into God's family based on Christ's righteousness, not our own.