How do you explain what Grace is? The word Grace is almost as definitive as the word Earth. How would you explain to someone what all is involved in the word Earth? A word in an exhaustive list that points out one facet of Grace is Adoption.
This song by Hillsong Worship points to one of the things Adoption allows us to believe.
I am who you say I am.
For as many as are led by the Spirit of God, they are the sons of God. For you have not received the spirit of bondage again to fear, but you have received the Spirit of adoption by which we cry, Abba, Father! The Spirit Himself bears witness with our spirit that we are the children of God.
(Romans 8:14-16 MKJV)