Christians believe that when Jesus came to Earth, he was both fully God (a person of the Trinity) and fully human. An apostle called Philip asked Jesus to reveal God the Father. However ...

"Jesus revealed that God is Father in an unheard ... and make our home with him': [Jn 14:23.] O my God, Trinity whom I adore, help me forget myself entirely so to establish myself in you ...

Heart of Jesus, in whom there dwells the fullness of God, . . . Heart of Jesus, in whom the Father is well pleased, . . . Heart of Jesus, from whose fullness we have all received ...

A key belief of almost all Christians is the belief in the Trinity - Father, Son and Holy Spirit, who were all present at the creation of the world and who each take on different roles.