35:2 Whoever does any work on it shall be put to death.
How serious did Yahvah take the Sabbath! The words are, a Sabbath of solemn rest, holy to Yahvah. Now solemn rest sounds quiet and meditative to me. The word holy here is a little vague; without looking it up I believe it means set-apart for Yahvah, that is, it is a day of complete surrender to do what pleases HIM, rather than what pleases us. You shall kindle no fire is not a curse that tells us to freeze to death in cold climates, but an indirect reference to the fact kindling fire was related to working kilns, cooking, and other manners of work.
21 everyone whose heart stirred him, and everyone whose spirit moved him,…
Freewill offerings are the normal mode of operation for the Assembly. If people are unwilling to give freely, then there is a heart or organizational problem. It may be individual, or it may be corporate – that is, something that the pastor and elders need to come to terms with and address as leaders. Taxation is an operation of Kings, rather than of Assemblies. Yahvah prefers his people to be freewill givers rather than be constrained by law. “Not of necessity…but cheerfully, as each has in store, so let him give.”
40:1 On the first day of the first month you shall erect the tabernacle… 17 In the first month in the second year, on the first day of the month, the tabernacle was erected.
Now, what day of the week might that have been? The first month is marked by the New Moon in the early spring time. So it could have been any day of the week. This second year is counted from the departure from Egypt, namely, that first passover night end of the Abib 14th, beginning of 15th same evening, which started Feast of Unleavened Bread. Actual correlation to a Julian Year is not very instructional — what is useful to see is the relative time frame. Exactly one year after leaving Egypt the entire Tabernacle and its priesthood was in full operation.