The writer of Sirach exclaimed: "How awesome are you, Elijah!" (Sir 48:4) Yet the awesome Elijah is only a creature of the totally awesome God. "Let us praise Him the more, since we cannot fathom Him, for greater is He than all His works; awful indeed is the Lord's majesty, and wonderful is His power" (Sir 43:29-30). "To whom can you liken God? With what equal can you confront Him?" (Is 40:18)
Jesus instructs us to address as "Father," "Abba," "Daddy," this awesome, infinite, all-holy Creator-Savior God (Mt 6:9). This is shocking and would be considered blasphemous by anyone who does not accept Jesus' divine authority to authorize such an unprecedented way of addressing God.
Trusting in Jesus, we dare to address God as our "Abba." The Holy Spirit cries out in our hearts "Abba" (Gal 4:6; Rm 8:15). In the intimacy and security of Abba's love (Rm 5:5), we are freed from a "spirit of slavery" leading us "back into fear" (Rm 8:15). We glory in the freedom of being sons and daughters of Abba.
Jesus taught: "This is how you are to pray:" Abba! (Mt 6:9)