Keep the lamps burning before the Lord from evening till morning.

Exodus 27:1-21
The Altar of burnt offering. 5 x 5 x 3 cubits long, wide and high.
The courtyard of the tabernacle. 100(S)x 50(E) x 100(N) x 50(W) cubits. The entrance of the courtyard, provide a curtain 20 cubits long of blue, purple ad scarlet yarn and finely twisted linen with four posts and four bases.  All the posts around the courtyard are to have silver bands and hooks and bronze bases.
Oil of the Lampstand. Israelites to provide clear oil of pressed olives. Aaron and his sons are to keep the lamps burning before the Lord from evening till morning.
Why?
Keep the laps burning before the Lord from evening rill morning. Keep prayer before the Lord and worship his holy name around the world.
In Tabernacle where each one is made by Gold and acacia wood because there is Holy Place.
The people of the ancient Near East were skilled in spinning, weaving and using natural dyes(染料) (scarlet from the cochineal(胭脂蟲) insect; purple, for the wealthy from the murex(骨螺) shellfish). Fine embroidery(刺繡) was also produced. Precious and semi-precious stones were rounded, polished and engraved. Gold and silver were beaten and worked into elaborate(縝密) designs. All these skills God called into play form the construction of his Tent.
How?
Keep prayer everyday is to honor God's holy name and keep the close relationship with God.