Galatians 4:6-7 And because you are sons, God has sent the Spirit of his Son into our hearts, crying, “Abba! Father!”  So you are no longer a slave, but a son, and if a son, then an heir through God.
When we became God’s children, we received the Holy Spirit. We can go to our Father because we are His children. He loves us and wants us to come to Him. Because we are a son, we are co-heirs with Christ! Amazing, isn’t it!?!!