Galatians 4:1

I mean that the heir, as long as he is a child, is no different from a slave, though he is the owner of everything,

What I am saying is that as long as an heir is underage, he is no different from a slave, although he owns the whole estate.

Think of it this way. If a father dies and leaves an inheritance for his young children, those children are not much better off than slaves until they grow up, even though they actually own everything their father had.

Now I say, for as long a time as the heir is a child, he is no different from a slave, although he is master of everything,

Now I say, That the heir, as long as he is a child, differeth nothing from a servant, though he be lord of all;