The consecration of the priests. See the notes to Exodus 29:4
Door of the tabernacle - Entrance of the tent. See Leviticus 8:3.
The “waving” was the more solemn process of the two: it was a movement several times repeated, while “heaving” was simply a “lifting up” once.
A stranger - One of another family, i. e. in this case, one not of the family of Aaron.
After the dedication of the tabernacle, the priests were consecrated to their sacred office. These services occupied seven days, each marked by special ceremonies. On the eighth day they entered upon their ministration. Assisted by his sons, Aaron offered the sacrifices that God required, and he lifted up his hands and blessed the people. All had been done as God commanded, and He accepted the sacrifice, and revealed His glory in a remarkable manner; fire came from the Lord and consumed the offering upon the altar. The people looked upon this wonderful manifestation of divine power with awe and intense interest. They saw in it a token of God's glory and favor, and they raised a universal shout of praise and adoration and fell on their faces as if in the immediate presence of Jehovah. PP 359.1
But soon afterward a sudden and terrible calamity fell upon the family of the high priest. At the hour of worship, as the prayers and praise of the people were ascending to God, two of the sons of Aaron took each his censer and burned fragrant incense thereon, to rise as a sweet odor before the Lord. But they transgressed His command by the use of “strange fire.” For burning the incense they took common instead of the sacred fire which God Himself had kindled, and which He had commanded to be used for this purpose. For this sin a fire went out from the Lord and devoured them in the sight of the people. PP 359.2
Next to Moses and Aaron, Nadab and Abihu had stood highest in Israel. They had been especially honored by the Lord, having been permitted with the seventy elders to behold His glory in the mount. But their transgression was not therefore to be excused or lightly regarded. All this rendered their sin more grievous. Because men have received great light, because they have, like the princes of Israel, ascended to the mount, and been privileged to have communion with God, and to dwell in the light of His glory, let them not flatter themselves that they can afterward sin with impunity, that because they have been thus honored, God will not be strict to punish their iniquity. This is a fatal deception. The great light and privileges bestowed require returns of virtue and holiness corresponding to the light given. Anything short of this, God cannot accept. Great blessings or privileges should never lull to security or carelessness. They should never give license to sin or cause the recipients to feel that God will not be exact with them. All the advantages which God has given are His means to throw ardor into the spirit, zeal into effort, and vigor into the carrying out of His holy will. PP 359.3Read in context »