Sorry so long..........
Jesus, was in a covenant relationship with Jehovah God when he thus presented himself to John for baptism. Jesus was there doing something more than what was required of him under the Law. He was presenting himself to his Father Jehovah to do his Father’s “will” with reference to the offering of his own “prepared” body and with regard to doing away with animal sacrifices that were offered according to the Law. The apostle Paul comments: “By the said ‘will’ we have been sanctified through the offering of the body of Jesus Christ once for all time.” (Heb 10:10) The Father’s will for Jesus also involved activity in connection with the Kingdom, and for this service too Jesus presented himself. (Lu 4:43; 17:20, 21) Jehovah accepted and acknowledged this presentation of his Son, anointing him with holy spirit and saying: “You are my Son, the beloved; I have approved you.”—Mr 1:9-11; Lu 3:21-23; Mt 3:13-17.
The Hebrew Scriptures are consistently clear in showing that there is but one Almighty God, the Creator of all things and the Most High, whose name is Jehovah. (Ge 17:1; Isa 45:18; Ps 83:18)
Jesus Christ himself said, “The Father is greater than I am” and referred to the Father as his God, “the only true God.” (Joh 14:28; 17:3; 20:17; Mr 15:34; Re 1:1; 3:12) On numerous occasions Jesus expressed his inferiority and subordination to his Father. (Mt 4:9, 10; 20:23; Lu 22:41, 42; Joh 5:19; 8:42; 13:16) Even after Jesus’ ascension into heaven his apostles continued to present the same picture.—1Co 11:3; 15:20, 24-28; 1Pe 1:3; 1Jo 2:1; 4:9, 10.
The New Catholic Encyclopedia states: “The formulation ‘one God in three Persons’ was not solidly established, certainly not fully assimilated into Christian life and its profession of faith, prior to the end of the 4th century. But it is precisely this formulation that has first claim to the title the Trinitarian dogma. Among the Apostolic Fathers, there had been nothing even remotely approaching such a mentality or perspective.”—(1967), Vol. XIV, p. 299.
John L. McKenzie, S.J., in his Dictionary of the Bible, says: “The trinity of persons within the unity of nature is defined in terms of ‘person’ and ‘nature’ which are G[ree]k philosophical terms; actually the terms do not appear in the Bible. The trinitarian definitions arose as the result of long controversies in which these terms and others such as ‘essence’ and ‘substance’ were erroneously applied to God by some theologians.”—(New York, 1965), p. 899.