Rashi: It is the first rays of morning, which pierce the clouds.

Radak: Orecha is your success. If you will do these deeds, you will not need fasts, sackcloth and ashes. Your success will increase like morning light gets stronger until it is proper daylight.

Malbim: Orecha is spiritual success and your happiness. (a) It will pierce slowly, like morning (the light increases gradually), and not at once. (b) Dawn comes only at the end of the night. (c) It will be natural, just like dawn is natural. All three of these are inferior to what is described in verse 10.

Rashi: Your cure will be quick. This is like "A'aleh Aruchah Lach" (Yirmeyah 30:17). Radak - if evil came upon your body or money until now, now that you improve your deeds, your cure will sprout quickly, like vegetation grows constantly. So will be your success in this world and in the world to come.

Malbim: This is bodily health and salvation. Sitzmach teaches that also this will be gradual, in levels, and natural.

Sotah 3b: Whoever does one Mitzvah in this world, it goes before him in the world to come.

Bava Basra 11a: One who gives Tzedakah, he stores up for himself in the world to come.

Malbim: The verse depicts that his virtue goes in front of him to announce his deeds and virtue.

Sotah 9b: Hashem engages in the burial of all Tzadikim.

Radak: When you will die, Kevod Hashem will gather you to the place of honor where the Nefashos of Tzadikim are bound in the bind of life. This is repeated two or three times [in different words] to strengthen the matter. The second time it says the details of what was said generally. The third time it mentions Shabbos, which is a great foundation for all the Mitzvos, like I explained above (refer to 56:2:5:2).

Malbim: This is reward. It will accompany him in back of him. He is one who has someone in front of him telling his merits, and in back of him someone carries his reward and honor.