Imagine having to stand in front of Allah (s.w.t.) and watch the sin being committed in front of you then having to explain it.
Allah (s.w.t.) mentions in Surah Al-Imran, verse 135, “And those who, when they commit immorality or wrong themselves [by transgression], remember Allah and seek forgiveness for their sins…” Keep the door of repentance open between you and Allah because He always ready to forgive you.