How does "Zove'ach Todah" honor Hashem?
Rashi: He brings to Hashem a 'Korban' of Teshuvah and confession of his sins.
Radak: He brings a Korban with confession of his evil deeds and repents from them. He is zealous for His Mitzvos!
Malbim: The verse means, one who wants to offer a Todah, I tell him that it is better to honor Me and go on another path, and not go with thieves and adulterers.
What is the meaning of "v'Sam Derech"?
Rashi: One who returns to Me.
Radak #1: He fixes his path and heart for the good. He does not need a Korban. All the more so he honors Me!
Radak #2: He arranges his path. The Targum of "Asher Sam Moshe" (Devarim 4:44) is d'Sadar Moshe. Mo'ed Katan 5a explains like this 1 .
Radak citing Vayikra Rabah 9: He gauges his path, that it be straight and b'Mishpat with people.
Malbim: Refer to 50:231:3.
One opinion there brings this as a source to mark off graves.
What will Hashem show to him?
Rashi: I will teach him and make a path for sinners to repent.
Radak: At the time of the salvation (final redemption) will be the day of judgment. The good who will remain will see His salvation, and be in a good state forever!
Hashem is talking. Why does it say "b'Yesha Elokim"?
Radak: This is like "v'El Moshe Amar Aleh El Hashem" (Shemos 24:1)