Because you are sons, God sent the Spirit of his Son into our hearts, the Spirit who calls out, "Abba, Father." Galatians 4:6
Recently my son was feeling ill and we prayed all night for healing. He seemed to have a fever and he felt nauseous. I laid my hands on his head and over his stomach and asked the ultimate physician for the restoration of his health. The next morning he woke up feeling restored! I told him to remember to thank Jesus and he said, “You know what I’m saying in my head? Thank you daddy!” When Jesus prayed in the garden of Gethsemane before he was arrested he prayed, "Abba, Father, everything is possible for you. Take this cup from me. Yet not what I will, but what you will." (Mark 14:36) His relationship with the Father was so intimate that he referred to him as Abba which is Father. Sometimes we think of the word father as formal and often when using this term the emotion we have for God is reserved. In our language Daddy usually brings a feeling of security and is an intimate expression. For those who have a disconnection with their earthly father it may be hard to know God as Daddy. He is more than what we define as a Father, He is the architect of our lives and not just a contributor to our existence, but our Creator. In Matthew 18:2-4 Jesus had called out to a child amongst the crowd and said, "I tell you the truth, unless you change and become like little children, you will never enter the kingdom of heaven. Therefore, whoever humbles himself like this child is the greatest in the kingdom of heaven.” Like my son; a child has an expectant faith, one that produces results, a child is able to love unconditionally and without judgment, a child can believe in God without doubt, and a child can know God as Daddy!