Priests: Services of Burning Incense
Source: TTT
Exodus 20:7, 8
You shall not take the name of the LORD your God in vain, for the LORD will not leave anyone unpunished who takes His name in vain. / Remember the Sabbath day by keeping it holy.
Luke 1:9
he was chosen by lot, according to the custom of the priesthood, to enter the temple of the Lord and burn incense.