Mark 14:36
And he said, Abba, Father, all things are possible unto thee; take away this cup from me: nevertheless not what I will, but what thou wilt.

Galatians 4:6
And because ye are sons, God hath sent forth the Spirit of his Son into your hearts, crying, Abba, Father.

Romans 8:15
For ye have not received the spirit of bondage again to fear; but ye have received the Spirit of adoption, whereby we cry, Abba, Father.