5 The fire on the mizbayach shall be kept burning, not to go out: every morning the Kohen shall feed wood to it, lay out the burnt offering on it, and turn into smoke the fat parts of the offerings of well-being.
6:5 The fire on the mizbayach shall be kept burning
The fire on the altar burns continuously, and is never extinguished. Although the priests were commanded to add two pieces of wood to the fire twice daily, the fire on the mizbayach remained burning miraculously, lit by a heavenly fire. The Sages (Ethics of the Fathers 5:5) list this as one of ten miracles experienced each day in the Beit Hamikdash. The continual flame serves as a reminder of Hashem’s constant presence among the People of Israel. While there is no longer a Temple nor an Altar, God’s everlasting presence is signified today by hanging an eternal light above the ark in every synagogue, a reminder of the eternal flame first mentioned in this verse.