This is the 16551st most frequent Korean word.
사람이면
"If one is a person" or "as a person."
The word '사람이면' is used conditionally to describe what is expected of a person as general behavior.
사람이면 존중해야 한다.
If one is a human being, they should show respect.
Here, '사람이면' is extended with a qualifier '정직한' that specifies the kind of person in discussion.
정직한 사람이면 믿을 수 있다.
If a person is honest, they can be trusted.
In this sentence, '사람이면' implies having humane qualities such as kindness and willingness to assist.