It's about producing fruit
In Philippians 1:11 Paul is praying for them, and says, "[that...that...may abound more and more...that...]... having been filled with the fruit of righteousness, which is by means of Jesus Christ, unto the glory and praise of God"
and in Romans 7:1-4, in verse 4 he says, "Likewise, my brothers, you also have been put to death to the Law through the body of Christ, for you to belong to another, to the One having been raised out from the dead, so that we should bear fruit to God"
and in Hebrews 13:20-21, the writer (again) is praying for them, and says, "[Now may the God of peace, having brought out from the dead the great Shepherd of the sheep, our Lord Jesus [...] ] equip you in everything good, in order to do His will, working in us that which is well pleasing before Him, through [/by means of] Jesus Christ, to whom be the glory to the ages of the ages. Amen."