"And Moses was on the mountain forty days and forty nights," including the six days of waiting, - the whole time without eating and drinking (Deuteronomy 9:9). The number forty was certainly significant, since it was not only repeated on the occasion of his second protracted stay upon Mount Sinai (Exodus 34:28; Deuteronomy 9:18), but occurred again in the forty days of Elijah's journey to Horeb the mount of God in the strength of the food received from the angel (1 Kings 19:8), and in the fasting of Jesus at the time of His temptation (Matthew 4:2; Luke 4:2), and even appears to have been significant in the forty years of Israel's wandering in the desert (Deuteronomy 8:2). In all these cases the number refers to a period of temptation, of the trial of faith, as well as to a period of the strengthening of faith through the miraculous support bestowed by God.

Exodus 25:6 Parallel Commentaries

oil for

Exodus 25:37 And you shall make the seven lamps thereof: and they shall light the lamps thereof, that they may give light over against it.

Exodus 27:20 And you shall command the children of Israel, that they bring you pure oil olive beaten for the light...

Exodus 40:24,25 And he put the candlestick in the tent of the congregation, over against the table, on the side of the tabernacle southward...

spices

Exodus 30:23-38 Take you also to you principal spices, of pure myrrh five hundred shekels, and of sweet cinnamon half so much...