One of Joseph Prince's sayings that promote irreverence towards God is stating that we can call God "Daddy" since that is what the term "Abba" means. We therefore hear expressions such as "Daddy God" and such expressions are given the rubber stamp of scriptural approval. However, is such a meaning really the case?
Some time back in 1988, the biblical scholar James Barr published an article in the Journal of Theological Studies arguing against Joachim Jeremias' interpretation that seem to imply that "Abba" is the same as "Daddy." Barr disputes that claim, stating in the process that the biblical writers could have used the Greek diminuitive form for "father" παπας instead of πατηρ to indicate such a connotation, much as τεκνιον ("dear child") is a diminuitive form of τεκνον (child). Doing some dichronic and synchronic study of the words related to father and "abba" in the Hebrew, Greek and Aramaic and their uses in extra biblical literature, Barr showed that it is unlikely that "abba" has the same connotation as the word "daddy." As Barr concludes,
It is fair to say that 'abba in Jesus' time belonged to a familiar or colloquial register of language, as distinct from more formal and ceremonius usage, though it would be unwise, in view of the usage of the Targum, to press this too far. But in any case it was not a childish expression comparable with 'Daddy': it was more a solemn, responsible, adult address to a Father
— James Barr, 'Abbā isn't "daddy"', Journal of Theological Studies, ns 39 no 1 Apr 1988, pp 28-47
While certainly this does not give us a really good idea of what the term "abba" refers to, we can safely conclude that the term is NOT "Daddy" and therefore Prince is in error here.
In conclusion, God is not our pal, or the over-indulging parent of a spoilt brat. Although we can call God as Abba Father as a name of endearment, we should not ever think that God is just our pal down the street or someone whom we can just approach informally without reverence and fear.