John Gill Commentary Numbers 15:14

"And if a stranger sojourn with you, or whosoever may be among you throughout your generations, and will offer an offering made by fire, of a sweet savor unto Jehovah; as ye do, so he shall do." — Numbers 15:14 (ASV)

And if a stranger sojourn with you
A stranger, or proselyte, not of the gate, but of righteousness, as Ben Gersom and the Jewish, writers in general interpret it;

or whatsoever [be] among you in your generations ;
whether such a proselyte settled and continued among them, or only stayed with them awhile:

and will offer an offering made by fire of a sweet savour unto the
Lord ;
is desirous of offering a burnt offering or a peace offering to the Lord in an acceptable manner:

as ye do, so shall he do ;
bring the same meat offering and drink offering, according to the nature and number of the cattle he brings for sacrifice.