Paul writes that we are adopted into the family of God. And in being adopted into the family we receive an inheritance. Before Christ was crucified the Jews followed the Mosaic Law given to Moses on Mount Siani. The Jews could come into the Kingdom of God! All you have to do is receive Jesus into your heart.
But after Jesus came anyone could come into the Kingdom of God! All you have to do is receive Jesus into your heart.
” Therefore you are no longer a slave, but a son; and if a son, then a heir through God. However at that time, when you did not know God, you were slaves to those which by nature are not gods. But now that you have come to know God, how is it that you worthless elemental things, to which you desire to be enslaved all over again.” Galations 4:7-9
“For you have not received a spirit of a slavery leading to fear again, but you have received a spirit of adoption as sons by which we cry “Abba!” “Father!” Romans 8:15
This was rare in the Jewish culture. That EVERYBODY was welcome to come?! God doesn’t just want the perfect ones He wants the broken, lonely, and hurt ones. He wants everybody!!
So often people look at the bond of adoption as being less close, I believe God intends it to be stronger!! God ADOPTED us into his family and He loves us unconditionally! and Paul conveys that very well.