2 Peter 3:14

Therefore, beloved, looking for these things, be diligent to be found spotless and blameless unto him in peace:

1 Corinthians 15:58

So, my beloved brethren, be ye stedfast, unmoveable, always abounding in the work of the Lord, knowing that your labor is not in vain in the Lord.

1 Thessalonians 3:13

in order to establish your hearts blameless in holiness in the presence of God even our Father, at the coming of our Lord Jesus with all his saints: amen.

1 Thessalonians 5:23

And the God of peace himself sanctify you wholly; and may your whole spirit and soul and body be preserved blameless, in the coming of our Lord Jesus Christ.

Philippians 1:10

in order that you may distinguish those things which differ; that you may be pure and without offence in the day of Christ;

Matthew 24:26

Therefore if they may say to you, Behold, He is in the desert; go not out: Behold, He is in the secret chambers; believe them not.

Luke 2:29

Now, O Lord, thou art letting thy servant depart, in peace according to thy word;

Luke 12:43

Happy is that servant, whom his lord having come shall thus find watching.

1 Corinthians 1:8

who will also establish you unblamable unto the end in the day of our Lord Jesus Christ.

Philippians 2:15

in order that you may be blameless and pure, the children of God, irreproachable, amid a crooked and perverse generation, among whom you shine as lights in the world,

Philippians 3:20

For our citizenship is in the heavens; whence we are indeed looking for our Saviour, the Lord Jesus Christ:

Hebrews 9:28

so also Christ, having once been offered up to bear away the sins of many, will appear the second time apart from sin unto salvation to those expecting him.

James 1:27

Pure religion and undefiled with God even the Father is this, to relieve the orphans and widows in their affliction, and keep himself unspotted from the world.

2 Peter 1:5-10

And in harmony with this same thing also, add to your faith heroism; and to heroism, knowledge;

1 John 3:3

Indeed every one having this hope on him purifies himself, even as he is pure.

Treasury of Scripture Knowledge

Summary

Wherefore, beloved, seeing that ye look for such things, be diligent that ye may be found of him in peace, without spot, and blameless.

Be diligent

Bible References

Seeing

Philippians 3:20
For our citizenship is in the heavens; whence we are indeed looking for our Saviour, the Lord Jesus Christ:
Hebrews 9:28
so also Christ, having once been offered up to bear away the sins of many, will appear the second time apart from sin unto salvation to those expecting him.

Be diligent

2 Peter 1:5
And in harmony with this same thing also, add to your faith heroism; and to heroism, knowledge;
1 John 3:3
Indeed every one having this hope on him purifies himself, even as he is pure.

In peace

Matthew 24:26
Therefore if they may say to you, Behold, He is in the desert; go not out: Behold, He is in the secret chambers; believe them not.
Luke 2:29
Now, O Lord, thou art letting thy servant depart, in peace according to thy word;
Luke 12:43
Happy is that servant, whom his lord having come shall thus find watching.
1 Corinthians 1:8
who will also establish you unblamable unto the end in the day of our Lord Jesus Christ.
1 Corinthians 15:58
So, my beloved brethren, be ye stedfast, unmoveable, always abounding in the work of the Lord, knowing that your labor is not in vain in the Lord.
Philippians 1:10
in order that you may distinguish those things which differ; that you may be pure and without offence in the day of Christ;
1 Thessalonians 3:13
in order to establish your hearts blameless in holiness in the presence of God even our Father, at the coming of our Lord Jesus with all his saints: amen.
1 Thessalonians 5:23
And the God of peace himself sanctify you wholly; and may your whole spirit and soul and body be preserved blameless, in the coming of our Lord Jesus Christ.

General references

Matthew 25:7
Then all those virgins arose and trimmed their lamps.
Luke 12:40
Be ye also ready: because at an hour you do not think the Son of man cometh.
Hebrews 13:14
for we have here no continuing city, but we are seeking unto one which is to come.