One idea, thought, sentence, and, thus, one statement in meter.
The couplet forms a complete sentence, idea, or thought without parallelism.
Like a club and a sword and a sharp arrow
Is a man who bears false witness against his neighbor.
You love all words that devour,
O deceitful tongue.
[all of the above is a direct quote from Module 7, BE 101, Parallelism Handout, 4]