what does the bible say?
“Abba” is a deeply personal word that expresses an intimate, trusting relationship with God as Father—like a child calling out “Daddy.” The first example in Scripture of a close father-son relationship is between Abraham and Isaac. Abraham had waited most of his life to have a son, yet after Isaac was born, he was told by God to use him as a sacrifice (Genesis 22). Yet God did not actually allow Isaac to be sacrificed. Rather, he was using Abraham and Isaac to foreshadow the future sacrifice He would bring to completion through His only Son, Jesus Christ.
Today, because of this sacrifice, we can call God “Abba” along with Jesus (Mark 14:36; John 1:12–13). We must remember, though, that it is only through salvation we can be “born again” (John 3:1–8) and be adopted into God’s family (John 3:16-18; Romans 8:15). Through this new relationship with God, we are deemed heirs with Christ (Romans 8:17), given the Holy Spirit who cries “Abba! Father!” (Galatians 4:6), and granted access to God at all times (Hebrews 10:22). Having God as our Father (Matthew 6:9) should be what motivates us to “walk in a manner worthy of the calling to which (we) have been called” (Ephesians 4:1).