en_tn/mrk/09/19.md

He answered them

Though it was the boy's father who made a request of Jesus, Jesus responds to the whole crowd. This can be made clear. Alternate translation: "Jesus responded to the crowd" (See: rc://en/ta/man/jit/figs-explicit)

Unbelieving generation

"You unbelieving generation." Jesus calls the crowd this as he begins to respond to them.

how long will I have to stay with you? How long will I bear with you?

Jesus uses these questions to express his frustration. Both questions have the same meaning. They can be written as statements. Alternate translation: "Your unbelief tires me! I wonder how long I must bear with you." (See: rc://en/ta/man/jit/figs-rquestion and rc://en/ta/man/jit/figs-parallelism)

bear with you

"endure you" or "put up with you"

Bring him to me

"Bring the boy to me"