What I am saying is that as long as the heir is a child, he is no different from a slave, although he owns the whole estate.
He is subject to guardians and trustees until the time set by his father.
So also, when we were children, we were in slavery1 under the basic principles of the world.2
References for Galatians 4:3
But when the time had fully come,3 God sent his Son,4 born of a woman,5 born under law,6
References for Galatians 4:4