Mark 9:28

Authorized King James Version

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And when he was come into the house, his disciples asked him privately, Why could not we cast him out?

Original Language Analysis

καὶ And G2532
καὶ And
Strong's: G2532
Word #: 1 of 18
and, also, even, so then, too, etc.; often used in connection (or composition) with other particles or small words
εἰσελθόντα when he was come G1525
εἰσελθόντα when he was come
Strong's: G1525
Word #: 2 of 18
to enter (literally or figuratively)
αὐτό him G846
αὐτό him
Strong's: G846
Word #: 3 of 18
the reflexive pronoun self, used (alone or in the comparative g1438) of the third person, and (with the proper personal pronoun) of the other persons
εἰς into G1519
εἰς into
Strong's: G1519
Word #: 4 of 18
to or into (indicating the point reached or entered), of place, time, or (figuratively) purpose (result, etc.); also in adverbial phrases
οἶκον the house G3624
οἶκον the house
Strong's: G3624
Word #: 5 of 18
a dwelling (more or less extensive, literal or figurative); by implication, a family (more or less related, literally or figuratively)
οἱ G3588
οἱ
Strong's: G3588
Word #: 6 of 18
the (sometimes to be supplied, at others omitted, in english idiom)
μαθηταὶ disciples G3101
μαθηταὶ disciples
Strong's: G3101
Word #: 7 of 18
a learner, i.e., pupil
αὐτό him G846
αὐτό him
Strong's: G846
Word #: 8 of 18
the reflexive pronoun self, used (alone or in the comparative g1438) of the third person, and (with the proper personal pronoun) of the other persons
ἐπηρώτων asked G1905
ἐπηρώτων asked
Strong's: G1905
Word #: 9 of 18
to ask for, i.e., inquire, seek
αὐτό him G846
αὐτό him
Strong's: G846
Word #: 10 of 18
the reflexive pronoun self, used (alone or in the comparative g1438) of the third person, and (with the proper personal pronoun) of the other persons
κατ' privately G2596
κατ' privately
Strong's: G2596
Word #: 11 of 18
(prepositionally) down (in place or time), in varied relations (according to the case (genitive, dative or accusative) with which it is joined)
ἰδίαν G2398
ἰδίαν
Strong's: G2398
Word #: 12 of 18
pertaining to self, i.e., one's own; by implication, private or separate
Ὅτι Why G3754
Ὅτι Why
Strong's: G3754
Word #: 13 of 18
demonstrative, that (sometimes redundant); causative, because
ἡμεῖς we G2249
ἡμεῖς we
Strong's: G2249
Word #: 14 of 18
we (only used when emphatic)
οὐκ not G3756
οὐκ not
Strong's: G3756
Word #: 15 of 18
the absolute negative (compare g3361) adverb; no or not
ἠδυνήθημεν could G1410
ἠδυνήθημεν could
Strong's: G1410
Word #: 16 of 18
to be able or possible
ἐκβαλεῖν cast G1544
ἐκβαλεῖν cast
Strong's: G1544
Word #: 17 of 18
to eject (literally or figuratively)
αὐτό him G846
αὐτό him
Strong's: G846
Word #: 18 of 18
the reflexive pronoun self, used (alone or in the comparative g1438) of the third person, and (with the proper personal pronoun) of the other persons

Analysis & Commentary

When Jesus 'was come into the house, his disciples asked him privately, Why could not we cast him out?' (εἰσελθόντος αὐτοῦ εἰς οἶκον οἱ μαθηταὶ αὐτοῦ κατ' ἰδίαν ἐπηρώτων αὐτόν, Ὅτι ἡμεῖς οὐκ ἠδυνήθημεν ἐκβαλεῖν αὐτό;). Their private question reveals humility—acknowledging failure and seeking understanding. The phrase 'why could not we' (hoti hēmeis ouk ēdynēthēmen, ὅτι ἡμεῖς οὐκ ἠδυνήθημεν) expresses genuine perplexity. They had successfully cast out demons before (Mark 6:13), so this failure was unexpected. Jesus' answer (v. 29) reveals that spiritual authority requires ongoing prayer and fasting, not just initial commissioning. Ministerial power isn't automatic or permanent but requires continuous dependence on God. The disciples' question models proper response to spiritual failure—private, humble inquiry seeking Jesus' instruction.

Historical Context

The disciples' earlier successful exorcisms (Mark 6:7-13) during their mission made this failure surprising. Jewish exorcism practices existed, but Jesus had given disciples unique authority over demons (Mark 3:15; 6:7). Their question 'Why could not we?' assumes they should have succeeded based on previous experience. Jesus' answer about prayer and fasting introduces a crucial principle: different spiritual battles require different levels of spiritual discipline. Some victories come easily; others require intensive prayer. This became foundational for Christian spiritual warfare teaching. The early church emphasized prayer and fasting for ministry effectiveness (Acts 13:2-3; 14:23).

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