Perhaps the repetition of those words, the Lord spake unto Moses, here and afterwards, Exodus 30:17, Exodus 30:22, Exodus 30:34, intimates, that God did not deliver these precepts to Moses, in a continued discourse, but with many intermissions, giving him time either to write what was said to him, or at least to charge his memory with it.
Related Commentaries of Exodus 30:11
Exodus 30:11
11 And the LORD spake unto Moses, saying,