## He plots evil ##

"He plans evil" AT: "He prepares to do evil deeds"

## he always stirs up discord ##

"he always causes discord" AT: "he is constantly looking for conflict and escalating it"

## Therefore ##

"For that reason"

## his disaster ##

That is the disaster that will happen to him, but also the disaster that he himself caused.

## overtake ##

That implies that the disaster is chasing him like a person or an animal, and that it will catch him soon. (See: [[rc://en/ta/man/translate/figs-personification]])

## in an instant, in a moment ##

Both mean the same thing, and one or both of them can be replaced by "suddenly" or "very quickly".