Leviticus 9 - "Do This"

"Moses said: This is the word which the Lord hath commanded: do it, and his glory will appear to you." (Leviticus 9:6)

"... And the glory of the Lord appeared to all the multitude:
And behold a fire coming forth from the Lord, devoured the holocaust, and the fat that was upon the altar: which when the multitude saw, they praised the Lord, falling on their faces." (Leviticus 9:23,24)

Notice the action required of God's people. "Do it," the "it" being the proper sacrifice offered to the Lord; and the glory in the form of fire from heaven was the sign that God was pleased in His people's action. Over and over in Scripture we read of commandments and promptings; calls to action. In reference to His Body and Blood, Jesus said "Do this for a commemoration of me" (Luke 22:19). I am thankful that God has given us a well lit path to follow, with many signs along the way, saying "do this" and "do that." How can anyone say "I am lost"?