1 John 3:19

And in this way we shall come to know that we are loyal to the truth, and shall satisfy our consciences in His presence

John 13:35

It is by this that every one will know that you are my disciples--if you love one another."

John 18:37

"So then *you* are a king!" rejoined Pilate. "Yes," said Jesus, "you say truly that I am a king. For this purpose I was born, and for this purpose I have come into the world--to give testimony for the truth. Every one who is a friend of the truth listens to my voice."

Romans 4:21

and being absolutely certain that whatever promise He is bound by He is able also to make good.

Romans 8:38

For I am convinced that neither death nor life, neither the lower ranks of evil angels nor the higher, neither things present nor things future, nor the forces of nature,

2 Timothy 1:12

That indeed is the reason why I suffer as I do. But I am not ashamed, for I know in whom my trust reposes, and I am confident that He has it in His power to keep what I have entrusted to Him safe until that day.

Hebrews 6:10-11

For God is not unjust so that He is unmindful of your labour and of the love which you have manifested towards Himself in having rendered services to His people and in still rendering them.

Hebrews 10:22

let us draw near with sincerity and unfaltering faith, having had our hearts sprinkled, once for all, from consciences oppressed with sin, and our bodies bathed in pure water.

Hebrews 11:13

All these died in the possession of faith. They had not received the promised blessings, but had seen them from a distance and had greeted them, and had acknowledged themselves to be foreigners and strangers here on earth;

1 John 1:8

If we claim to be already free from sin, we lead ourselves astray and the truth has no place in our hearts.

1 John 3:14

As for us, we know that we have already passed out of death into Life--because we love our brother men. He who is destitute of love continues dead.

1 John 3:21

Dear friends, if our hearts do not condemn us, we have perfect confidence towards God;

Treasury of Scripture Knowledge

Summary

And hereby we know that we are of the truth, and shall assure our hearts before him.

Bible References

Shall

1 John 3:21
Dear friends, if our hearts do not condemn us, we have perfect confidence towards God;
Hebrews 6:10
For God is not unjust so that He is unmindful of your labour and of the love which you have manifested towards Himself in having rendered services to His people and in still rendering them.
Hebrews 10:22
let us draw near with sincerity and unfaltering faith, having had our hearts sprinkled, once for all, from consciences oppressed with sin, and our bodies bathed in pure water.

Assure

Romans 4:21
and being absolutely certain that whatever promise He is bound by He is able also to make good.
Romans 8:38
For I am convinced that neither death nor life, neither the lower ranks of evil angels nor the higher, neither things present nor things future, nor the forces of nature,
2 Timothy 1:12
That indeed is the reason why I suffer as I do. But I am not ashamed, for I know in whom my trust reposes, and I am confident that He has it in His power to keep what I have entrusted to Him safe until that day.
Hebrews 11:13
All these died in the possession of faith. They had not received the promised blessings, but had seen them from a distance and had greeted them, and had acknowledged themselves to be foreigners and strangers here on earth;