(Ibid. 18) "But only before the L-rd your G-d shall you eat it": This is (the sanctuary of) Shiloh.
"in the place that the L-rd your G-d chooses": This is Jerusalem.
"you, your son, your daughter, your man-servant, your maid-servant": in order of affection.
"and the Levite who is in your gates": Wherever you find a Levite, give him his portion (first-tithe). If he has no portion, he gives him poor-tithe. If he has no poor-tithe, he gives him peace-offerings.
(Ibid. 19) "Take heed unto yourself": a negative commandment;