How does someone get energized?
When a Kohen began his first day of service in the Mishkan, he brought a special offering. The Kohen Gadol brought this offering each and every day. It was a Minchah, consisting of flour and oil. It was scalded in boiling water, baked in an oven, fried in a pan, and then baked again after the frying. Salt was added to it and it was burnt on the altar together with incense. No one was permitted to eat any part of the offering; it had to be burnt in its entirety. It was referred to as Minchas Chavitin, because it was prepared on a machvas, a griddle.
On the day that a Kohen Gadol was initiated to his service, he brought two such offerings. One was because this was the protocol for every Kohen who began his service. The other was because the Kohen Gadol was instructed to bring this offering each day that he served.
It was an unusual offering, in that half of it was brought in the morning, and half in the evening. The prescribed amount of flour yielded twelve loaves. The Rambam, Maimonides, states that the twelve loaves were baked together and each loaf was then split with twelve half-loaves offered in the morning and the other twelve half-loaves offered in the afternoon.
If a Kohen Gadol brought the morning Mincha and then died, the newly appointed Kohen Gadol would bring an offering in the evening. However, he would have to prepare the entire amount and then present half. Why was the Kohen Gadol charged to go through this process every day? Why was it necessary each day to have it all prepared in the morning, since half was going to be brought later on? Why not wait until later to prepare the second half?
Although the Kohen Gadol was granted his position, every day was supposed to be viewed as a new day of initiation. Every day he had to be worthy. This applies not just to the Kohen Gadol. With every blessing and with every position of importance granted by Hashem, one must constantly make certain that he is worthy.
The Kohen Gadol was directed to approach each day with enthusiasm. It was arranged that the process of offering the Minchah was to be performed twice each day, once in the morning as the day began and again in the evening, to maintain that inspiration and vigor throughout the day. Nevertheless, already in the morning, the entire amount had to be prepared, thereby demonstrating that when you give, it should be with your all. Therefore, even if a new Kohen Gadol came to the scene in the middle of the day, his half had to be from a whole.
Do we remain complacent or do we get energized? What measures do we take to maintain and renew our enthusiasm? Is everything calculated and limited or do we give our all?
Rabbi Hershel D. Becker
 See Tzav 6:12-16, Rashi; Rav Mishneh Menachos 4:5
 Maaseh Hakarbanos 13:4
 Menachos 50b
 Drash Moshe Tzav 6:15