Abba is the Aramaic form of father, emerging clearly in the Second Temple period and preserved in the Apostolic writings. It is Yeshua's own word in Gethsemane, where Mark leaves it in the original Aramaic rather than translating it into Greek (Mark 14:36). Paul does the same thing in Romans 8:15 and Galatians 4:6, teaching the Spirit-filled community to cry out in the word their Messiah used. The Aramaic is not a mistranslation that leaked in. It is deliberately preserved.

A popular teaching has long rendered abba as "Daddy," claiming Yeshua was using baby-talk. James Barr's 1988 article Abba Isn't Daddy demonstrated that this is incorrect. Abba in first-century Aramaic usage is what an adult son says to his living father. Intimate, direct, unmediated by title or ritual, but not childlike. The distinction matters because the correct reading is stronger. Yeshua was not acting like a toddler in Gethsemane. He was speaking to His Father the way a son speaks to a present, covenant-bound, trusted Father. Direct. Unveiled. Reverential from nearness, not from distance.