Why does the Torah write "ba'Boker" twice in connection with the Ketores?
Pesachim, 59a: To teach us that the Ketores precedes the placing of the limbs on the Mizbe'ach, by which the Torah writes "ba'Boker" only once. 1
Yerushalmi Berachos, 1:5: To give a border to the morning (of Haneitz ha'Chamah). In other words, although "Boker" generally refers to Haneitz ha'Chamah, in the realm of Korbanos, it applies to Amud ha'Shachar or therebouts. 2
What are the ramifications of the fact that the Torah juxtaposes the word "be'Heitivo" to "ba'Boker ba'Boker"?
Yoma, 33b: That is why the Kohanim divided the Hatavas Neiros into two parts
Yoma, 33b: Five - Because if the Kohen is already preparing the lights, he may as well prepare the majority; Not six
What does the Torah mean when it writes "be'Heitivo es ha'Neiros Yaktirenah"? Which one came first?
Yoma, 14b: The Ketores preceded the Hatavas Sh'tei Neiros, and what the Pasuk means is 'when preparing the two) lamps the Ketores shall already have been brought on the Mizbe'ach'. 1
What does "be'Heitivo es ha'Neiros" mean?
Rashi, Targum Onkelos and Targum Yonasan: It means "when he (Aharon) prepares the lamps - by cleaning the lamp-holders and removing the burnt-out wicks (which the Kohen did each morning)".
What is the definition of "Neiros"?
Rashi: It means lamp-holders
Why does the Pasuk state that Aharon shall burn the Ketores. Is a Kohen Gadol required?
Da'as Zekenim, Hadar Zekenim: No! 1 There was a lottery for who will burn the Ketores (Yoma 2:4), to try to enable all Kohanim to do it at least once.
Ramban #1: Because in Pasuk 10, it refers to Aharon atoning on the K'ranos of the Mizbe'ach ha'Ketores on Yom Kipur, it mentions him here as well.
Ramban #2: Because the Torah wants Aharon to be the first to burn the Ketores. 2