Cross reference
Philippians 2:18
18 because of this do ye also rejoice and joy with me.
James 1:2-4
2 All joy count `it', my brethren, when ye may fall into temptations manifold;
3 knowing that the proof of your faith doth work endurance,
4 and let the endurance have a perfect work, that ye may be perfect and entire -- in nothing lacking;
Philippians 3:1
1 As to the rest, my brethren, rejoice in the Lord; the same things to write to you to me indeed is not tiresome, and for you `is' sure;
Philippians 4:4
4 Rejoice in the Lord always; again I will say, rejoice;
Ephesians 3:13
13 wherefore, I ask `you' not to faint in my tribulations for you, which is your glory.