One of my most referred to bible passage is the Philippians 4:6-7 do-not-be-anxious one. But because of today's sermon, I've now noticed the verse before: "Let your reasonableness be known to everyone. The Lord is at hand." ~ Philippians 4:5.
It basically means we as Christians are to be reasonable, magnanimous and in peace in all our undertakings, especially in relation with our dealings with everyone, believers and unbelievers alike.
Indeed, a very timely reminder in our current times, very timely indeed.
Source: Gerald F. Hawthorne, Philippians, Word Biblical Commentary