10537. 'And Jehovah said to Moses' means instruction. This is clear from the meaning of 'saying', when Jehovah is the speaker, as instruction, dealt with in the places referred to in 10280, at this point instruction showing that Divine Truth did not reside with the actual nation, which is meant by the command to them to take off their finery, dealt with below.

10279. 'And sanctify them to serve Me in the priestly office' means to represent the Lord's whole work of salvation. This is clear from the meaning of 'being sanctified' as representing the Lord in respect of the Divine Human, dealt with above in 10276; and from the representation of 'the priestly office' of Aaron and his sons as the Lord's work of salvation in its successive order, dealt with in 9809, 10017.