Paul said it first

God is working in you...

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.

Phil. 2:15 (Amplified)