Philippians 4 : 4
“Rejoice in the Lord always. I will say it again: Rejoice!
The Greek word used for rejoice shares the same root with grace and joy. It would thus imply to be conscious of and have joy in the free grace from the Saviour Lord.
Apostle Paul repeats the command twice for emphasis. A believer is to believe, be filled with the blessings and thankfully enjoy the same in his life.