고통에는

In a sentence

• 고통에는 끝이 있다.

  Pain has an end.

  Here, '고통에는' is used to indicate the subject 'pain', with '-는' marking the topic focus.

• 고통에는 이유가 있을지도 모른다.

  There might be a reason for pain.

  '고통에는' focuses on the concept of pain as a topic, suggesting reasons might exist for it.

• 우리는 고통에는 삶에 필연적이라는 점을 깨달아야 합니다.

  We must realize that pain is essential in life.

  In this context, '고통에는' is used to highlight that pain has qualities intrinsic to life.