It has been reported that when Princess Elizabeth received word that her half sister, Queen Mary, had died and now Elizabeth was queen of England (Elizabeth 1), that she fell to her knees and declared, "This is the Lord's doing and it is marvelous in our sight." Ps 118:23. That would be a natural way to think for this situation. But one of the points of Philippians is to develop that same attitude even when, humanly speaking, we're going thru trial and tribulation.
Yesterday was a pressure cooker day at the office (altho I'm certainly not comparing it to what the early church went thru). But it was definitely a day that was prone to grumbling. Trying to practice what I've learned in Philippians, this verse popped to mind. I had reason to say it a lot during the day. I felt both calmed and energized (calmed over the latest calamity and energized to move on with my work, instead of pouring energy into grumbling).
I know many people who have a "life verse" from the Bible. It's their go-to verse with the good and the bad events of life. This verse from Psalms is excellent for me. It works in good times and bad--an all-weather verse. So now, growing out of my study of Philippians, I have a life verse that fits like a glove.