73 We know that the Aramaic word Jesus used to address the Father was “ Abba” , an intimate and familiar term that some found disconcerting (cf. Jn 5:18). It is how he addressed the Father in expressing his anguish at his impending death: “ Abba, Father, for you all things are possible; remove this cup from me; yet, not what I want, but what you want” ( Mk 14:36). Jesus knew well that he had always been loved by the Father: “You loved me before the foundation of the world” ( Jn 17:24). In his human heart, he had rejoiced at hearing the Father say to him: “You are my Son, the Beloved; with you I am well pleased” ( Mk 1:11).
Source: Dilexit Nos (Vatican.va)