Willing offering be same between Isrealite and Alien

Numbers 15:1-21
After you enter the land I am giving you as a home and you present to the Lord offerings made by fire, from the herd or the flock, as an aroma then the one who bring his offering shall present to the Lord a grain offering of a teth of an ephah of fine flour mixed with a quataer of a hin of oil .
Lamb for the burnt offering, a quater of a hin of wine as drink offering.
Ram : a grain offering of two-tenths of an ephah of fine flour mixed with a third of a hin of oil and a third of a hin of wine as a drink offering.
Young bull as burnt offering, shall bring with the bill a grain offering of three-tenths of a ephah of fine flour mixed with half a hin of oil. Bring half a hin of wine as a drink offering.
You and alien shall be the same before the Lord; The same laws and regulations will apply both to you and to the alien lving among you.
Throughout the generations to come you are to give this offering to the Lord from the first of your ground meal.
Offering to be made after the conquest of Canaan.
Why?
The instructions that follow are for 'when you enter the land'. It may be delayed, but it will surely happen!
Offer burnt offering with different kind of animal should offer correspondent grand offering. It depends on his position and capability of the offering.
Before Isrealite enter the promised land they had not any ground meal can offer.
A ephan = 20 liters, a hin = 4 liters. So the grand offering is large volume, it means the prosperity of groud product of Canaan will be. If you have more than offer more offering to the Lord. All of those gain are blessed from the Lord.
Israelite and Alien has the same rule, they have same regulation for offerning is his own willing so as the blessing are same from the Lord.
Why?
Give the the Lord is depends on our capability and position, is is a willing offering with joy and thanks giving to the Lord. For He is worthy of praise, worthy of the glory and worthy of the worship.