New Testament Greek is by Balinese standards an extremely impolite language. Consider, for example, the second person pronoun. When speaking to God, to a nobleman, to a friend, to a pupil, or to a slave, the same word is used. In Balinese this is completely different. In the above examples one would differentiate various social ranks and use terms which, more or less freely translated, mean “adored one” or “he who is borne on the head”, “feet of Your Highness”, “older (or younger) brother”, “little one”, and “you”. (…) In Balinese one has to cope with three vocabularies within the language, each of which, at a moderate estimate, includes some hundreds of words. One employs the ordinary common language (“Low Balinese”) when speaking with intimates, equals, or inferiors; polite terms must, however, be used as soon as one begins to speak to one’s superiors or to strangers; and “deferential” terms are obligatory in all cases when one is so bold as to speak of parts of the body, or the acts, possessions, and qualities of important people. The Balinese sums up the two last named vocabularies under the term alus (“fine”, or “noble”): we say “High Balinese”. (…)
Joseph and Mary are spoken of as Jesus’ parents, and here the familiar words for “father” and “mother” are appropriate. But when Jesus speaks of being “about my Father’s business” (vs. 49), thus indicating who His true Father is, He uses the High Balinese word adji “father”.
Source: J.L. Swellengrebel in The Bible Translator 1950, p. 124ff.