Does fasting still make sense?

Note that interpretation has already entered at the translation stage here.

Practically: check the immediate context first, then compare the parallel passages. In practice, starting small is the only approach I've seen actually work. If you're not in a hurry, come back to this in a year.

手順としては、まず前後の文脈を確認し、次に並行箇所を比べるのが確実です。

I heard a sermon on precisely this and I'll summarize how it was framed. Practically: check the immediate context first, then compare the parallel passages.

この点については、信仰の立場と学問の立場で答えが違ってきます。同じ疑問を持つ人は多く、私も長いあいだ答えを持てませんでした。結論から言うと、聖書自体が一つの答えを示していません。複数の読み方が並存しています。

It may be worth questioning the premise of the question itself. Tracing how the early church handled it locates the modern debate quite usefully. If you're not in a hurry, come back to this in a year.

I heard a sermon on precisely this and I'll summarize how it was framed. Honestly, I don't think a clean answer to this exists. In my experience the practice changes before the understanding does.

Sometimes changing translation dissolves the question entirely.

文法的な説明をすると長くなるので、結論だけ書きます。

短く答えるなら「両方正しい」となります。長く答えると一冊の本になります。私は牧師ですが、この問いには「分かりません」と答えることにしています。

If you're not in a hurry, come back to this in a year. There's a long history here, with the argument running from the fourth century onward.