Hebrews 9:6

Now when these things have been prepared in this way, the priests continually enter the outer [or first section of the] tabernacle [that is, the Holy Place] performing [their ritual acts of] the divine worship,

Numbers 28:3

You shall say to the people, ‘This is the offering by fire which you shall present to the Lord every day: two male lambs one year old without blemish as a continual burnt offering.

Exodus 27:21

In the Tent of Meeting [of God with His people], outside the veil which is in front of the [ark of the] Testimony [and sets it apart], Aaron [the high priest] and his sons shall keep the lamp burning from evening to morning before the Lord. It shall be a perpetual statute [to be observed] throughout their generations on behalf of the Israelites.

Exodus 30:7-8

Aaron shall burn sweet and fragrant incense on it; he shall burn it every morning when he trims and tends the lamps.

2 Chronicles 26:16-19

But when Uzziah became strong, he became so proud [of himself and his accomplishments] that he acted corruptly, and he was unfaithful and sinned against the Lord his God, for he went into the temple of the Lord to burn incense on the altar of incense.

Daniel 8:11

Indeed, it magnified itself to be equal with the Commander of the host [of heaven]; and it took away from Him the daily sacrifice (burnt offering), and the place of His sanctuary was thrown down (profaned).

Luke 1:8-11

Now it happened while Zacharias was serving as priest before God in the appointed order of his priestly division,

Treasury of Scripture Knowledge

Summary

Now when these things were thus ordained, the priests went always into the first tabernacle, accomplishing the service of God.

Bible References

The priests

Exodus 27:21
In the Tent of Meeting [of God with His people], outside the veil which is in front of the [ark of the] Testimony [and sets it apart], Aaron [the high priest] and his sons shall keep the lamp burning from evening to morning before the Lord. It shall be a perpetual statute [to be observed] throughout their generations on behalf of the Israelites.
Exodus 30:7
Aaron shall burn sweet and fragrant incense on it; he shall burn it every morning when he trims and tends the lamps.
Numbers 28:3
You shall say to the people, ‘This is the offering by fire which you shall present to the Lord every day: two male lambs one year old without blemish as a continual burnt offering.
2 Chronicles 26:16
But when Uzziah became strong, he became so proud [of himself and his accomplishments] that he acted corruptly, and he was unfaithful and sinned against the Lord his God, for he went into the temple of the Lord to burn incense on the altar of incense.
Daniel 8:11
Indeed, it magnified itself to be equal with the Commander of the host [of heaven]; and it took away from Him the daily sacrifice (burnt offering), and the place of His sanctuary was thrown down (profaned).
Luke 1:8
Now it happened while Zacharias was serving as priest before God in the appointed order of his priestly division,