'Abba, Father': Can we call God 'Dad' and mean it?

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 whom we cry, "Abba, Father!" The Spirit himself bears witness with our spirit that we are children of God, and if children, then heirs, heirs of God and joint heirs with Christ, if only we suffer with him so that we may also be glorified with him.

– The Letter of Saint Paul to the Romans, 8:14-71

Before the headline topic, let's pay heed to the appeal from Myanmar Cardinal Charles Maung Bo, relayed and reiterated by Davao Archbishop Romulo Valles, president of the Catholic Bishops' Conference of the Philippines (CBCP).