He Used 'Abba' Only Once — and Not for Himself
Jesus used the Aramaic word 'Abba' exactly once in the gospels, and it appears in a prayer no one else was meant to hear.
Across all four gospels in the KJV, the Aramaic word 'Abba' appears in Jesus's direct speech only once: Mark 14:36, spoken in Gethsemane — 'Abba, Father, all things are possible unto thee; take away this cup from me: nevertheless not what I will, but what thou wilt.' The moment is striking for several reasons that emerge from the words themselves. First, Jesus is not teaching anyone; this is private prayer, overheard rather than instructed. Second, the phrase 'Abba, Father' is doubled — the Aramaic term immediately followed by its Greek translation, a bilingual repetition that does not appear in any of his public speeches. Third, the prayer is immediately surrendered: the urgent address 'Abba' opens a request that is withdrawn in the same breath. Fourth, although Jesus frequently instructs his disciples to address God as 'Father,' he never instructs them to use 'Abba.' The intimacy of the Aramaic form is reserved for his own voice in extremity, not offered as a model of address. The Lord's Prayer uses 'Father' or 'Our Father,' not 'Abba.' The word surfaces once, at the moment of maximum pressure, in a language he did not normally use in recorded speech — and then never again.
Red Letter Sources
Mark 14:36
And he said, Abba, Father, all things are possible unto thee; take away this cup from me: nevertheless not what I will, but what thou wilt.
Evidence Notes
Search all four gospels (KJV red-letter text) for the string 'Abba.' It appears only at Mark 14:36 in Jesus's direct speech. Matthew's parallel Gethsemane accounts (26:39, 26:42) use 'O my Father' without 'Abba.' Luke 22:42 uses 'Father' only. John has no Gethsemane prayer scene with direct speech. The Lord's Prayer parallels (Matthew 6:9, Luke 11:2) use 'Father' / 'Our Father,' not 'Abba.'
Greek Note
'Abba' (אַבָּא) is Aramaic, transliterated directly into Greek text as Ἀββᾶ. Mark preserves the Aramaic vocative and then supplies the Greek gloss ὁ πατήρ ('the Father') immediately after — a bilingual doublet. Matthew's parallel drops the Aramaic entirely, using only the Greek address. This makes Mark 14:36 the sole instance of Jesus using Aramaic address to God in any recorded speech across all four gospels.