Philippians 2:14-15

Do all things without grumbling and faultfinding and complaining [against God] and questioning and doubting [among yourselves], That you may show yourselves to be blameless and guileless, innocent and uncontaminated, children of God without blemish (faultless, unrebukable) in the midst of a crooked and wicked generation [spiritually perverted and perverse], among whom you are seen as bright lights (stars or beacons shining out clearly) in the [dark] world