form of address between the persons of the Trinity

In Hindi a differentiation is made between the way that the different persons of the Trinity are addressed by a regular person or by another person of the Trinity. When Jesus addresses God the Father or when God the Father addresses Jesus, a familiar form of address is used, unlike the way that any of them would be addressed with a honorific (plural) form by anyone else.

Source: C.S. Thoburn in The Bible Translator 1963, p. 180ff.