growing in grace

Peter Suggested Paul’s Grace Epistles

Peter suggest that grace information is to be found in all of Paul's grace epistles.

What does Peter mean in saying “… grow in grace, and in the knowledge of our Lord… ?”

“But grow in grace, and in the knowledge of our Lord and Saviour Jesus Christ. To him be glory both now and for ever. Amen” (2 Peter 3:18 KJV).