1 John 3:19

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

John 13:35

if ye have mutual love to each other.

John 18:37

Pilate therefore said unto Him, Art thou then a king? Jesus answered, Thou sayest right, I am a king. For this end was I born, and for this came I into the world, even that I might bear witness to the truth. Every one that is of the truth, heareth my voice.

Romans 4:21

and being fully persuaded, that what was promised He was able to perform:

Romans 8:38

For I am persuaded that neither death, nor life, nor angels, nor principalities, nor powers, nor things present, nor things future,

2 Timothy 1:12

for which cause also I suffer these things; but I am not ashamed: for I know in whom I have trusted, and am persuaded that He is able to keep what I have committed to Him against that day.

Hebrews 6:10-11

For God is not unjust to forget your work and labor of love, which ye have shewn to his name, by having ministred to the saints, and yet ministring.

Hebrews 10:22

let us draw near with sincerity, in the full assurance of faith, having our hearts cleansed from an evil conscience, and our bodies washed with pure water.

Hebrews 11:13

These all died in faith, not having received the promises, but seen them from afar, and been persuaded of them, and embraced them, and confessed that they were strangers and sojourners on the earth.

1 John 1:8

If we say that we have no sin, we deceive ourselves, and the truth is not in us.

1 John 3:14

since we know that we have passed from death to life, because we love the brethren: he, that loveth not his brother, remaineth in death.

1 John 3:21

Beloved, if our heart condemn us not, then have we 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
Beloved, if our heart condemn us not, then have we confidence towards God:
Hebrews 6:10
For God is not unjust to forget your work and labor of love, which ye have shewn to his name, by having ministred to the saints, and yet ministring.
Hebrews 10:22
let us draw near with sincerity, in the full assurance of faith, having our hearts cleansed from an evil conscience, and our bodies washed with pure water.

Assure

Romans 4:21
and being fully persuaded, that what was promised He was able to perform:
Romans 8:38
For I am persuaded that neither death, nor life, nor angels, nor principalities, nor powers, nor things present, nor things future,
2 Timothy 1:12
for which cause also I suffer these things; but I am not ashamed: for I know in whom I have trusted, and am persuaded that He is able to keep what I have committed to Him against that day.
Hebrews 11:13
These all died in faith, not having received the promises, but seen them from afar, and been persuaded of them, and embraced them, and confessed that they were strangers and sojourners on the earth.