Rejoice

The Book of Philippians is known as the Epistle of Joy and the word Rejoice is found 10 times in Paul's letter to the Philippians.

Paul tells the Philippians in Phil 3, that they are to rejoice in the Lord.
I think as Christians we really should be the most joyful people on earth.

If you are walking with the Lord there should be a joy in your life.

Both the Philippian Church and the Galatian Church were under the threat of Jewish legalists that were corrupting the purity of the Gospel.
The Jewish legalists were in fact preaching another Gospel by adding the works of the Law to the Gospel.

In context today, there are those in various religious systems that add to the Gospel.

For instance, the Roman Catholic Church will teach that Jesus Christ died on the cross for our sins but they add works to the Gospel.

When you become a Christian trusting in Christ's work on the cross for your sins, God declares you righteous.

Your past sins have been FORGIVEN, your present sins have been FORGIVEN and your future sins have been FORGIVEN.