What is the Chidush "Kaspo Lo Nasan b'Neshech"? The Torah explicitly forbids this! Also, it already says "he did not do evil to his colleague" (verse 3)!
Makos 24a: He does not take interest even from a Nochri 1 (lest he come to take from a Yisrael).
Radak: He did not take from him Isur even if he consented, i.e. Ribis. Even though he gives willingly, he is forced to give, for he needs to borrow. The lender takes improperly. A person is used to this; he does not call it Chamas, like he calls robbery and theft. Therefore, the Torah warned about it greatly, and Nevi'im consider it among the most severe sins. One who is used to it, his money will depart quickly.
Malbim: This shows that he is not moved by love of money. He does Chesed to the poor, and does not take Ribis.
Radak: David and Yechezkel forbade only what the Torah forbids, taking from a Yisrael - "la'Nochri Sashich" (Devarim 23:21). "Lo Sosef Alav v'Lo Sigra Mimenu" (Devarim 13a)! (Some texts of Radak forbid robbery, theft, Aveidah and Ona'ah even from Nochrim. Sanhedrin 76b forbids returning a Nochri's Aveidah! Bechoros 13b permits Ona'as Nochri, and one opinion permits even theft! Perhaps this is a censor's addition, or a comment from an ignorant scribe that became incorporated in the text of Radak. - PF) The Torah obligates lending to a Yisrael without Ribis; this is a Chesed. If a Nochri did Chesed for a Yisrael (which is rare), one must lend to him without Ribis.
What is "v'Shochad Al Naki Lo Lakach"?
Makos 24a: R. Yishmael b'Rebbi Yosi illustrates this 1 .
Rashi: He does not take a bribe to tilt the verdict and obligate the Oni 2 .
Rashi citing Chazal: He does not take a bribe from the innocent, to vindicate him - all the more so he does not take a bribe to tilt the verdict! Radak - the one who gave the bribe thought that he will tilt the verdict due to it; he erred. Even so, he never took money from a litigant, like Shmuel ha'Navi "Es Shor Mi Lakachti" (Shmuel I, 12:3).
Malbim: He does not even take money for his toil without intent to tilt the verdict.
What do we learn from "Ose Eleh"?
Makos 24a: It does not say 'Ose Kol Eleh', rather, "Ose Eleh." This shows that one who does even one of these matters will not falter 1 !
Malbim: Also these matters in which one refrains from transgressing, they are considered like action, for the Yetzer entices for them. He does an act to overpower his Yetzer.
Initially, R. Gamliel held that only one who does all of them will not falter. The Gemara implies that he accepted the answer, and retracted. However, Tosfos (Bava Metzi'a 71a) implies that he did not! Also, one who takes Ribis "va'Chai Lo Yichyeh" (Yechezkel 18:13) - is this not even if he fulfilled one of the other matters?! (PF)
What is the meaning of "Lo Yimot l'Olam"?
Rashi: He is proper to dwell in Your Ohel. Even if he falters, it is not permanent; he falls and rises.
Radak: Even in death he will not falter. His Nefesh will dwell in the place of honor.
Malbim: He will always dwell in front of Hashem; Chesed and Emes will guard him.
