There will also be connections to literary techniques as explored in Amram Tropper's Avot, Wisdom, and Artistic Prose. [link]

Rabbi Said: which is the straight path that a man should choose for himself? One which is an honor to the person adopting it, and [on account of which] honor [accrues] to him from others. And be careful with a light commandment as with a grave one, for you did know not the reward for the fulfillment of the commandments. Also, reckon the loss [that may be sustained through the fulfillment] of a commandment against the reward [accruing] thereby, and the gain [that may be obtained through the committing] of a transgression against the loss [entailed] thereby. Apply your mind to three things and you will not come into the clutches of sin: Know what there is above you: an eye that sees, an ear that hears, and all your deeds are written in a book.
This Mishnah makes use of syntactic paralellism and list paralellism.
The syntactic paralellism is present in the contrasting ideas in the first part of the Mishnah, while the list paralellism is present in the last sentence.
Rabban Gamaliel the son of Rabbi Judah Hanasi said: excellent is the study of the Torah when combined with a worldly occupation, for toil in them both keeps sin out of one’s mind; But [study of the] Torah which is not combined with a worldly occupation, in the end comes to be neglected and becomes the cause of sin. And all who labor with the community, should labor with them for the sake of Heaven, for the merit of their forefathers sustains them (the community), and their (the forefather’s) righteousness endures for ever; And as for you, [God in such case says] I credit you with a rich reward, as if you [yourselves] had [actually] accomplished [it all].
He used to say: A brute is not sin-fearing, nor is an ignorant person pious; nor can a timid person learn, nor can an impatient person teach; nor will someone who engages too much in business become wise. In a place where there are no men, strive to be a man.
This Mishnah makes use of Syntactic Paralellism. (nor... nor... nor...)
This Mishnah also makes use of consequential parallelism.
(The more _____, the more _____)
This Mishnah makes use of List Parellism (three things).
This Mishnah also makes use of antithetic parallelism. "It is not your duty to finish the work, but neither are you at liberty to neglect it."