A bishop and several other people have been stabbed during a sermon in Sydney that was being streamed online, local media report.

The incident reportedly happened on Monday night in the suburb of Wakeley.

Police responded to reports that a number of people had been stabbed but said none of their injuries were life-threatening.

They added that a man had been arrested and was assisting them with their inquiries.

It was not immediately clear what weapon was used in the attack, which is reported to have happened at the Christ The Good Shepherd Church.