2 Peter 1:9-10

9But whoever does not have them is nearsighted and blind, forgetting that they have been cleansed from their past sins. 10Therefore, my brothers and sisters, The Greek word for brothers and sisters (adelphoi) refers here to believers, both men and women, as part of God’s family. make every effort to confirm your calling and election. For if you do these things, you will never stumble,