"Sitting in the highest secrecy" - This refers to God, as it says in Kings 1:8 "Behold, will God dwell on earth? The heavens and the heavens of heavens cannot contain You." Rabbi Huna said in the name of Rabbi Idi, commenting on Psalm 92:11 "And You have exalted my horn like that of a wild ox": When David was a shepherd, he found the wild ox asleep, and he composed this psalm. This psalm is understood to refer to the Temple that Solomon built, and it was Moses who spoke of the Holy of Holies being twenty cubits by twenty cubits, while the one he built was ten cubits by ten cubits.
When did they say this? When Moses saw all the work that had been done, as it says in Exodus 39:43 "And Moses saw all the work, and behold, they had done it as the Lord had commanded, so had they done it; and Moses blessed them." What did he bless them with? He said, "May the Divine Presence rest on the work of your hands."
And they said (Psalm 90:17) "And may the graciousness of the Lord our God be upon us, and the work of our hands may He establish upon us; yea, the work of our hands, may He establish it." Even though it is not explicitly written in the Torah, it is in the Writings, as it says in Psalms 90:16 "Let Your work appear to Your servants, and Your majesty upon their children." Moses began by saying, "Sitting in the highest secrecy, in the shadow of the Almighty, he shall lodge."
Rabbi Judah, son of Rabbi Simon, said that Moses learned three things from the mouth of God and was stunned. When God said to him (Exodus 30:12) "When you take the census of the children of Israel," Moses was shocked and said (Proverbs 13:8) "A man's ransom is his life." Who can deny his own soul? Rabbi Meir said that God showed Moses a fiery coin-like object and told him in Exodus 30:13 that this is what he should give as an offering.
Similarly, when God commanded Moses in Numbers 28:2 to instruct the Israelites to offer bread, Moses questioned how they could provide enough sheep and offerings. God replied, "I do not seek as much as you think. Just offer one lamb each morning." When God commanded Moses in Exodus 25:8 to build a sanctuary, Moses asked who could construct a sanctuary that would house the Divine Presence.
God responded in 1 Kings 8:27 that even the heavens and the highest heavens could not contain Him. God told Moses that when He asks for the whole world, it does not honor Him, but when He asks for a little, it honors Him greatly. God did not ask for much from Moses; just 10 cubits to the north, south, and west. God is the Supreme Being who sees without being seen.
In the shade that Bezalel made, the Divine complained. Moses would say the song of distress, "Sitting in the highest secret place."