And we know [with great confidence] that God [who is deeply concerned about us] causes all things to work together [as a plan] for good for those who love God, to those who are called according to His plan and purpose.

to live lives [of honor, moral courage, and personal integrity] worthy of the God who [saves you and] calls you into His own kingdom and glory.

After you have suffered for a little while, the God of all grace [who imparts His blessing and favor], who called you to His own eternal glory in Christ, will Himself complete, confirm, strengthen, and establish you [making you what you ought to be].

Our gospel

on that day when, as my gospel proclaims, God will judge the secrets [all the hidden thoughts and concealed sins] of men through Christ Jesus.

Now to Him who is able to establish and strengthen you [in the faith] according to my gospel and the preaching of Jesus Christ, according to the revelation of the mystery [of the plan of salvation] which has been kept secret for long ages past,

for our good news [regarding salvation] came to you not only in word, but also in [its inherent] power and in the Holy Spirit and with great conviction [on our part]. You know what kind of men we proved to be among you for your benefit.

To

You will show me the path of life;
In Your presence is fullness of joy;
In Your right hand there are pleasures forevermore.

His master said to him, ‘Well done, good and faithful servant. You have been faithful and trustworthy over a little, I will put you in charge of many things; share in the joy of your master.’

In My Father’s house are many dwelling places. If it were not so, I would have told you, because I am going there to prepare a place for you.

I have given to them the glory and honor which You have given Me, that they may be one, just as We are one;

And if [we are His] children, [then we are His] heirs also: heirs of God and fellow heirs with Christ [sharing His spiritual blessing and inheritance], if indeed we share in His suffering so that we may also share in His glory.

And [I pray] that the eyes of your heart [the very center and core of your being] may be enlightened [flooded with light by the Holy Spirit], so that you will know and cherish the hope [the divine guarantee, the confident expectation] to which He has called you, the riches of His glorious inheritance in the saints (God’s people),

to live lives [of honor, moral courage, and personal integrity] worthy of the God who [saves you and] calls you into His own kingdom and glory.

If we endure, we will also reign with Him;
If we deny Him, He will also deny us;

[born anew] into an inheritance which is imperishable [beyond the reach of change] and undefiled and unfading, reserved in heaven for you,

He who overcomes [the world through believing that Jesus is the Son of God], I will grant to him [the privilege] to sit beside Me on My throne, as I also overcame and sat down beside My Father on His throne.

And the city has no need of the sun nor of the moon to give light to it, for the glory (splendor, radiance) of God has illumined it, and the Lamb is its lamp and light.

There will no longer exist anything that is cursed [because sin and illness and death are gone]; and the throne of God and of the Lamb will be in it, and His bond-servants will serve and worship Him [with great awe and joy and loving devotion];

General references

So then God’s choice is not dependent on human will, nor on human effort [the totality of human striving], but on God who shows mercy [to whomever He chooses—it is His sovereign gift].