Why does the Torah need to tell me that Seor and Devash cannot be placed on the Miz’be’ach. Why would I have thought otherwise? It is not one of the ingredients listed for menachos and should therefore be chullin be’azarah?
See Rashi Vayikra 2-12 that explains that there are korbanos (mincha) that we are allowed to being soer and devash, such as for the shtay halechem, which was brought from chometz and bikurim which are brought from fruits which re sweet. Therefore the torah tells us that although there is a time that these things are allowed, but those korbanos are the exception, and normally soer and devash may not be brought as a korban.