The 'emptiest' of Christians and the most fallen is still not empty, an empty vessel of gold is still gold, This message is to the Christian who is backslidden, down or unsure. But this is God's letter to you, 'you are still my disciple' 'my own' and this no man can take from you.

You are a recipient of God's enormous saving power being justified by faith in Him

It is written in Ephesians 2: 4

But God, who is rich in mercy, for his great love wherewith he loved us,

Even when we were dead in sins, hath quickened us together with Christ, (by grace ye are saved;)

And hath raised us up together, and made us sit together in heavenly places in Christ Jesus: