King James Version
Thus speak unto the Levites, and say unto them, When ye take of the children of Israel the tithes which I have given you from them for your inheritance, then ye shall offer up an heave offering of it for the LORD, even a tenth part of the tithe.English Standard Version
"Moreover, you shall speak and say to the Levites, 'When you take from the people of Israel the tithe that I have given you from them for your inheritance, then you shall present a contribution from it to the LORD, a tithe of the tithe.New International Version
"Speak to the Levites and say to them: 'When you receive from the Israelites the tithe I give you as your inheritance, you must present a tenth of that tithe as the LORD's offering.