"Vulnerability is the willingness to take the risk of allowing any event, belief, preference, interest, or emotion of your life to be 'on the table' when it is useful to glorify God by encouraging a fellow believer, allowing a fellow believer to encourage you, or evangelizing an unbeliever. It is this disposition that breathes the life of authenticity into relationships and allows them to be mutually enjoyable, enriching, and character-shaping."
[Brad Hambrick, "Vulnerability"]