The first reading at Mass today was from St Paul’s letter to the Romans. In it we are told, “… those who are led by the Spirit of God are sons of God. For you did not receive a spirit of slavery to fall back into fear, but you received a spirit of adoption, through which we cry, ‘Abba, Father!’ The Spirit himself bears witness with our spirit that we are children of God …” (Rom. 8:12-17)
Find it here.