This is the 3160th most frequent Korean word.
것일
"것일" is a combination of "것" (thing) and "일" (will be), meaning "thing that will be" or "something that will."
The word '것일' is used here as part of the future tense construction '것이다', indicating a likelihood or conjecture regarding a state or action.
그는 그의 꿈을 이루기 위한 주요한 방법은 노력일 것이라고 했다.
He said that the main way to achieve his dream would be effort.
In this sentence, the word '것일' underlies '것이다' in its polite form, combined with '마법일' indicating a probable identity attributing 'peace' to 'magic'.
자연에서 느껴지는 평온함은 모든 걱정을 없애줄 마법일 것입니다.
The peace felt in nature will be the magic to erase all worries.
Here, '것일' is part of a question framing the potential truth or identity of the plan being the key for success.