Ephesians 6:21-24 is Paul's closing the the people of Ephesus. He tells them he's sending Tychicus to tell them about how Paul and his ministry are going, and so he can encourage them. Paul then concludes with "Peace be to the brothers, and love with faith, from God the Father and the Lord Jesus Christ. Grace be with all who love out Lord Jesus Christ with love incorruptible."
We have no idea of the battles Paul and the early church faced. We have the freedom worship God. We have established churches where we can go together and corporately gather to learn from God's word, praise God with fellow believers, and grow in faith. Paul offers comforting words to the church at Ephesus to encourage them to continue in their faith. He offers them peace and love with faith from Jesus. He reminds them of the grace that comes from the love of Jesus and how incorruptible that love is.
Praise God for His Son.
Praise God for His Grace.