In Galatians 4, Paul reiterates the foolishness of living by the Law in light of the new covenant.
Paul uses various metaphors of inheritance and slavery in order to explain the reason the Law was in place when it was and why there is no longer a need to follow this Law.
Jesus met the need for the Law in the cross and as a result we are given freedom and an inheritance. Verse 7 says:
So you are no longer a slave, but God’s child; and since you are his child, God has made you also an heir.
This is great news. We are not slave to a Law or to sin, but we our God’s children. That’s an amazing thing to consider; the God of the universe treats us like his own child. He loves and cherishes us.
It’s also a gospel of good news for the outcast in society: the orphans and the rejected; those in broken families or strained relationships. Although sometimes human families can fail us, God is always faithful and is a good, good father.