Written to encourage Christians to grow in their faith and to make their salvation secure, the "calling" referred to here is the calling by God to salvation, and the "election" refers to the choice by God to include someone in His kingdom.
The verse is encouraging believers to work hard to make sure that their calling and election are secure. In other words, it is saying that Christians should be diligent in their efforts to live according to God's will and to grow in their faith, in order to be confident that they have truly been saved. If they do these things, they will never fall away from their faith.
The message of this verse is that salvation is not a one-time event, but a lifelong journey of growth and maturity in Christ. In order to be confident of our salvation, we must be diligent in our efforts to live according to God's will and to grow in our faith. When we do these things, we will have the assurance that we are truly saved and will never fall away from our faith.
In Verse 11, Peter is encouraging believers to work hard to make their calling and election sure. The "entrance" referred to here is the entrance into the eternal kingdom of God.
The verse is saying that if we put effort into our faith and live according to God's will, then we will receive an abundant entrance into God's eternal kingdom. The phrase "abundantly ministered" means that this entrance will be given to us in a rich and plentiful way. In other words, it is saying that our salvation and entrance into God's kingdom will not just be a bare minimum, but will be full and abundant.
The message of this verse is that salvation is not something that we earn, but it is a gift from God. However, we can take steps to make our salvation secure and to grow in our faith. When we do this, we can have the confidence that we will receive a rich and abundant entrance into God's eternal kingdom, where we will enjoy His presence and love forever.
2 Peter 1:10-11. Be more diligent to make your calling and election sure. For if you do these things, you will never stumble. For thus you will be richly supplied with the entrance into the eternal Kingdom of our Lord and Savior, Jesus Christ.