Value in studying the Halachic Bible

I am interested in starting by studying the laws of Nida specifically, but I assume that the question has significance for any area of ​​halakhic law. (The study is not for immediate practical purposes).
Do you think there is value in starting the study with the verses of the Bible, trying to understand what is written in them and what is not written in them, before moving on to the halachic studies, the Mishnayot, and the Gemarat?
Although the formal authority is that of the Sages, I believe that it is still worthwhile to understand what the Sages said, directly or indirectly, from the verses, and what appears to exist on its own (perhaps in the oral tradition). In our specific case, for example, it seems that the Torah does not contain a law of observing a day for a day at all.
Is there any significance to understanding what the Sages bring from the verses and what not, perhaps in terms of weight and obligation (not necessarily practical – in which case we are obligated to them, but for example, in terms of values: if something clearly emerges from the Torah, then it probably expresses a value that God, the Holy One, desires, as opposed to things that came from the Sages, which may be less so).