“Rejoice in the Lord always. Again I will say, rejoice.”
The repetition of the command leaves no choice. In such a state, a person is so focused on the Lord that problems do not distract, and in faith, they are placed before the Lord.
Such joy is not about a positive or optimistic attitude but faith, that God is in control and will strengthen to face and will rescue from all tribulations. This joy is in nothing else but the Lord.
This joy does not seek proof but faith in the promises of the Lord!