2 Chronicles 29:11

My sons, do not be negligent and careless now, for the Lord has chosen you to stand in His presence, to attend to His service, and to be His ministers and burn incense.”

Numbers 3:6-9

“Bring the tribe of Levi near and present them before Aaron the priest, so that they may serve him.

Numbers 8:6-14

“Take the Levites from among the sons of Israel and cleanse them.

Numbers 16:35-40

Fire also came forth from the Lord and consumed the two hundred and fifty men who were offering the incense.

Numbers 18:2-7

But bring with you also your brothers, the tribe of Levi, the tribe of your father (ancestor), so that they may join with you and serve you [as assistants], while you and your sons with you are before the Tent of the Testimony [the Holy Place where only priests may go, and the Most Holy Place which only the high priest may enter].

Deuteronomy 10:8

At that time the Lord set apart the tribe of Levi to carry the ark of the covenant of the Lord, to stand before the Lord to serve Him and to bless in His name until this day.

Galatians 6:7-8

Do not be deceived, God is not mocked [He will not allow Himself to be ridiculed, nor treated with contempt nor allow His precepts to be scornfully set aside]; for whatever a man sows, this and this only is what he will reap.

Treasury of Scripture Knowledge

Summary

My sons, be not now negligent: for the LORD hath chosen you to stand before him, to serve him, and that ye should minister unto him, and burn incense.

Negligent

The lord nu 3

Bible References

Negligent

Galatians 6:7
Do not be deceived, God is not mocked [He will not allow Himself to be ridiculed, nor treated with contempt nor allow His precepts to be scornfully set aside]; for whatever a man sows, this and this only is what he will reap.

The lord nu 3

Deuteronomy 10:8
At that time the Lord set apart the tribe of Levi to carry the ark of the covenant of the Lord, to stand before the Lord to serve Him and to bless in His name until this day.

Burn incense

Numbers 16:35
Fire also came forth from the Lord and consumed the two hundred and fifty men who were offering the incense.
Numbers 18:7
Therefore you and your sons with you shall attend to your priesthood for everything concerning the altar [of burnt offering and the altar of incense] and [of the Holy of Holies] within the veil, and you are to serve. I am giving you the priesthood as a bestowed service, but the stranger (outsider, layman) who approaches shall be put to death.”