'Free from Sin' in the Bible

So the priest will make the people free from sin, and they will have forgiveness; for it was an error, and they have given their offering made by fire to the Lord, and their sin-offering before the Lord, on account of their error:

And Moses said to Aaron, Take your vessel and put in it fire from the altar, and sweet spices, and take it quickly into the meeting of the people, and make them free from sin: for wrath has gone out from the Lord, and the disease is starting.

And we have here an offering for the Lord from what every man took in the war, ornaments of gold, leg-chains and arm-rings, finger-rings, ear-rings, and neck-ornaments, to make our souls free from sin before the Lord.