This section of Scripture falls within a greater chaistic structure from Num 3:5-8:26:
The focus of the central axis is the menorah, the golden lampstand which was in the Holy Place. The original instructions for its design are in Exo 25:31-40. The tabernacle is a multi-layered prophetic picture, and in one interpretation, the Most Holy Place represents the heart, wherein the presence of YHVH dwells; the Holy Place represents the soul, that is, the mind, will, and emotions; and the outer court represents the body.
The instruction in Num 8:1-4 is that the seven-branched menorah, representing the light of YHVH which is never to go out, is in the Holy Place. Accordingly, the light of YHVH is to be placed in the soul or mind to illuminate the soul or mind, and it is to never go out. What is the light of YHVH?
Your word is a lamp to my feet and a light to my path. Psa 119:105
The menorah prophesies of Yeshua, as He is the Word of God made flesh (Joh 1:1, 14):
Then Jesus spoke to them again, saying, “I am the light of the world. He who follows Me shall not walk in darkness, but have the light of life.” Joh 8:12
So they departed from the mountain of YHVH on a journey of three days; and the ark of the covenant of YHVH went before them for the three days’ journey, to search out a resting place for them. Num 10:33
Three is a sign of the Messiah in Torah, which we have seen numerous times before. The ark of the covenant of YHVH contained the tablets of stone, the Law of God, covered by the mercy seat. It is Messiah who is the Word of God made flesh (Joh 1:1, 14). Yes, even the Law of God is Messiah, as His Law is also His Word. But His Law, His Word, is always covered by mercy – is that not the gospel?
The ark of the covenant, that is, Law covered over by Mercy, goes on a three days’ journey, to search out a place of rest for Israel. On the third day, Messiah, the Word (Law) which put on flesh, full of grace and truth (Mercy) was raised to life in triumph over hell, death, and all the power of the devil, and in Him Israel finds her place of rest!
Here Moses appeals to YHVH, and He instructs him to appoint seventy elders of Israel to help him in bearing the burden of the people. To equip them for this work, YHVH takes of the Spirit that is upon Moses – the Holy Spirit of God – and puts it upon the seventy also. We know that it was the Spirit of God, because when they received it, they prophesied by that Spirit. When some were shocked that others than the Anointed Prophet, that is, Moses, prophesied, he said,
Would that all YHVH’s people were prophets, that YHVH would put His spirit upon them! Num 11:29
Yeshua, the Prophet like Moses, yes, greater than Moses, did the same:
After these things the Lord appointed seventy others also, and sent them two by two before His face into every city and place where He Himself was about to go. Luk 10:1
Then the seventy returned with joy, saying, “Lord, even the demons are subject to us in Your name.” Luk 10:17
The same incident is recorded in Mat 10, where it is written that He gave them power over unclean spirits, and to heal every sickness and disease.
Moses was faithful in all God’s house as a servant (Num 12:7), while Messiah is faithful in all God’s house as the Son (Heb 3:1-6). But not only that, when Joshua the son of Nun wanted Moses to forbid the two elders from prophesying because he was jealous for Moses’ sake, and Moses expressed his desire that all the LORD’s people were prophets (he was speaking prophetically of the time which Joel also prophesied of in Joe 2:28-32), this incident is thematically related to a similar instance with Jesus and His disciple:
Now John answered and said, “Master, we saw someone casting out demons in Your name, and we forbade him because he does not follow with us.” But Jesus said to him, “Do not forbid him, for he who is not against us is on our side.” Luk 9:49-50