NET
6 And because you are sons, God sent the Spirit of his Son into our hearts, who calls “Abba! Father!”
Darby
6 But because ye are sons, God has sent out the Spirit of his Son into our hearts, crying, Abba, Father.
KJV
6 And because ye are sons, God hath sent forth the Spirit of his Son into your hearts, crying, Abba, Father.