Acceptable Worship is Important

Leviticus 10:1-2
"Now Nadab and Abihu, the sons of Aaron each took his censer and put fire in it and laid incense on it and offered unauthorized fire before the Lord, which he had not commanded them. And fire came out from before the Lord and consumed them and they died before the Lord."

Hebrews 12: 28-29
"Therefore let us be grateful for receiving a kingdom that cannot be shaken and thus let us offer to God acceptable worship, with reverence and awe, for our God is a consuming fire."