When you set up the lamps, see that all seven light up the area in front of the lampstand

Numbers 8:1-26

“Speak to Aaron and say to him, ‘When you set up the lamps, see that all seven light up the area in front of the lampstand.

This is how the lampstand was made: It was made of hammered gold—from its base to its blossoms. The lampstand was made exactly like the pattern the Lord had shown Moses.

The Lord said to Moses: “Take the Levites from among all the Israelites and make them ceremonially clean. To purify them, do this: Sprinkle the water of cleansing on them; then have them shave their whole bodies and wash their clothes. And so they will purify themselves. 

Moses, You are to bring the Levites before the Lord, and the Israelites are to lay their hands on them. Aaron is to present the Levites before the Lord as a wave offering from the Israelites, so that they may be ready to do the work of the Lord.

“Then the Levites are to lay their hands on the heads of the bulls, using one for a sin offering to  the Lord and the other for a burnt offering, to make atonement for the Levites. Have the Levites stand in front of Aaron and his sons and then present them as a wave offering to the Lord. In this way you are to set the Levites apart from the other Israelites, and the Levites will be mine.

From among all the Israelites, I have given the Levites as gifts to Aaron and his sons to do the work at the tent of meeting on behalf of the Israelites and to make atonement for them so that no plague will strike the Israelites when they go near the sanctuary.

Why?

The light in front of the lampstand, so my life should like the lamp shine in my environment.

The Levites has to retire at age fifty, the reason is this work need labor and they did not do the heavy work but teach the young men to serve the Lord.

How?

Am I standing firm in front of the Lord? May my mind and my heart could deeply understand the way of the Lord.