predistination

Because God commands it of His beloved children who He is not going to judge in the same manner as He judges the unsaved...according to their sins.

Our sins have been placed upon Christ...theirs have not.
Forgiveness extends only to those who, from the heart, believe on Christ ( Romans 10:9-10 ).

Keep up your studies...He has much to show those who love him.

 

Paul answers this. While we, the elect, are predestined and saved by God's grace. We will have different cups in heaven. Meaning God gifts us in heaven and tests our works, which we did on earth.
Do we build with gold, silver and precious stones or do we build with wood, hay and stubble for our King? Notice, all are building materials, but some are less precious than others. Also remember, we are building for a King, not a pauper.

1 Corinthians 3:10-15 According to the grace of God given to me, like a skilled master builder I laid a foundation, and someone else is building upon it. Let each one take care how he builds upon it. For no one can lay a foundation other than that which is laid, which is Jesus Christ. Now if anyone builds on the foundation with gold, silver, precious stones, wood, hay, straw— each one’s work will become manifest, for the Day will disclose it, because it will be revealed by fire, and the fire will test what sort of work each one has done. If the work that anyone has built on the foundation survives, he will receive a reward. If anyone’s work is burned up, he will suffer loss, though he himself will be saved, but only as through fire.

 

God does a complete work in making us new creatures.
Your good works are ordained by God.eph2:10
All of your future life events and service of worship is also to conform you to the image of Jesus.

 

To make your election and calling sure.

2Pet. 1:10 Therefore, brethren, be even more diligent to make your call and election sure, for if you do these things you will never stumble;​