Matthew 6:9

6:9 So pray this way:

Our Father in heaven, may your name be honored,

Romans 8:15-16

8:15 For you did not receive the spirit of slavery leading again to fear, but you received the Spirit of adoption, by whom we cry, “Abba, Father.” 8:16 The Spirit himself bears witness to our spirit that we are God’s children.

Galatians 4:6

4:6 And because you are sons, God sent the Spirit of his Son into our hearts, who calls “Abba! Father!”