What is the meaning of Hebrews 9:19?

* The two F.O.G. Bibles & Commentary below are currently a work in progress.

For when Moses had proclaimed every commandment of the law to all the people, he took the blood of calves and goats, along with water, scarlet wool, and hyssop, and sprinkled the scroll and all the people,

Berean Standard Bible (BSB)

For when every commandment had been spoken by Moses to all the people according to the law, he took the blood of the calves and the goats, with water and scarlet wool and hyssop, and sprinkled both the book itself and all the people,

World English Bible (WEB)

For{G1063} when{G5259} Moses{G3475} had spoken{G2980}{(G5685)} every{G3956} precept{G1785} to all{G3956} the people{G2992} according{G2596} to the law{G3551}, he took{G2983}{(G5631)} the blood{G129} of calves{G3448} and{G2532} of goats{G5131}, with{G3326} water{G5204}, and{G2532} scarlet{G2847} wool{G2053}, and{G2532} hyssop{G5301}, and sprinkled{G4472}{(G5656)} both{G5037} the book{G975}{G846}, and{G2532} all{G3956} the people{G2992},

Strong's King James

(19) Because every commandment spoken by Moshe (Drawn from Water) for all the people in accordance with The Torah, he took the blood of calves with water, scarlet wool and hyssop. And sprinkled the covenant scroll itself and all the people,

The F.O.G*

[19] After Moses had proclaimed every command of the law to all the people, he took the blood of calves and goats, along with water, scarlet wool, and hyssop branches, and sprinkled both the scroll itself and all the people,

The F.O.G Paraphrase

for every command having been spoken, according to law, by Moses, to all the people, having taken the blood of the calves and goats, with water, and scarlet wool, and hyssop, he both the book itself and all the people did sprinkle,

Young's Literal Translation