Isaiah 1:31 is probably a continuation of God speaking.

## The strong man ##

"The strong person" or "Whoever is powerful." This may refer to people who are important and who influence other people.

## will be like tinder ##

Here, the powerful person is compared to material that is easily broken and burned. Alternate translation: "will be like kindling for a fire." (See: [[rc://en/ta/man/translate/figs-simile]])

## tinder ##

dry material that is used to start a fire

## and his work like a spark ##

This compares the person's deeds or evil works to a spark that sets the tinder on fire. Alternate translation: "His work will be like the small flame that starts the fire."