John Gill Commentary Luke 9:41

"And Jesus answered and said, O faithless and perverse generation, how long shall I be with you, and bear with you? bring hither thy son." — Luke 9:41 (ASV)

And Jesus answering, said
To the father of the child, and those that were with him; and with a particular view to the Scribes and Pharisees, who had been insulting the disciples, and triumphing over them, because of their inability to cast out the evil spirit: for the words are not spoken to the disciples, as they might seem at first view to be, and as the Persic version renders them, "and Jesus turned his face to the disciples, and said"; but to the unbelieving Jews,

O faithless and perverse generation, how long shall I be with you,
and suffer you? bring your son hither ;
(See Gill on Matthew 17:17).