Wonderful combination of joy, prayer, and thanksgiving in Paul:
give thanks in all circumstances;
for this is the will of God for you in Christ Jesus." (1 Thess 4:16-18)
"Rejoice in the Lord always; again I will say, Rejoice.Deeply rooted, all this, in the quiet confidence that it is Christ Jesus himself who is interceding for us:
Let all men know your forbearance.
The Lord is at hand.
Have no anxiety about anything, but in everything by prayer and supplication with thanksgiving let your requests be made known to God.
And the peace of God, which surpasses all understanding, will keep your hearts and your minds in Christ Jesus." (Phil 4:4-7)
"Christ Jesus... is at the right hand of God, and intercedes for us." (Rom 8:34)