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.

6883. 'And God said further still to Moses, Thus you are to say to the children of Israel' means the instruction that is provided third. This is clear from the explanation just above in 6881.