God in his holiness desires a holy people amongst whom he can dwell, and who can effectively worship, witness to and serve him as they prepare for a future with God and to be like God.
The goal of holiness is to be like God
See also
God dwells with holy people
God dwelt with the people of Israel
God dwells with Christians
Holiness is required for acceptable worship
pp Mk 7:6
Holiness is needed for effective witness
Holiness is needed for godly service
Holiness leads to a future hope
Holy people will see God
Holy people will receive eternal life
Holy people will inherit the kingdom
Holy people will judge the world
Believers' ultimate destiny is to share God's holiness for ever