1 peter 2: 9b and 10 as a call to worship

Preaching on Psalm 133 this sunday and focusing on Christian unity. So using 1 Peter 2: 9b and 10  as a call to worship. While I could have used the first part of verse 9 I felt that verse 10 pulled together the idea of encounter God's grace with believers being a people and a family.

Once we were not a people,

but now we are the people of God;

Once we had not received mercy,

                But In Christ we  have received mercy.

Let us together declare the praises of him

Who called us out of darkness into his wonderful light.