And it is known that the author of an anonymous passage of Sifra is Rabbi Yehuda, and he provides homiletical interpretations for juxtapositions of verses in the Torah only when the interpretations are evident from the context or the verse is extraneous (as one finds in the Babylonian Talmud Berachos 21a and Yevamos 4a). And moreover, one does not find homiletical interpretations like these in Sifra.

Except for the sentence Leviticus 23:3 about the Sabbath, that falls between two verses about appointed seasons.

And the sentence Leviticus 23:22 about not wholly reaping the corner of one’s field, which is off-topic.

And the sentence, Leviticus 19:20 about a designated bondmaid, which is out of place.

And the homiletical interpretation that is made with respect to juxtapositions of verses in Leviticus 19-20 are the words of Rabbi Nechemia.

And the topic of מקרא נדרש לפניו (a verse is interpreted in reference to the clause that immediately precedes it). And the topic of גורעים ומוסיפים ודורשים (subtract, add, and homiletically interpret), and it is according to the ways of grammar and language.

גורעים ומוסיפים ודורשים is a way of homiletically interpreting the Torah through subtracting letters from one word and adding them to another word.