1 John 3:19

By this we will know [without any doubt] that we are of the truth, and will assure our heart and quiet our conscience before Him

Isaiah 32:17

And the effect of righteousness will be peace,
And the result of righteousness will be quietness and confident trust forever.

John 13:35

By this everyone will know that you are My disciples, if you have love and unselfish concern for one another.”

So Pilate said to Him, “Then You are a King?” Jesus answered, “You say [correctly] that I am a King. This is why I was born, and for this I have come into the world, to testify to the truth. Everyone who is of the truth [who is a friend of the truth and belongs to the truth] hears and listens carefully to My voice.”

Romans 4:21

being fully convinced that God had the power to do what He had promised.

Romans 8:38

For I am convinced [and continue to be convinced—beyond any doubt] that neither death, nor life, nor angels, nor principalities, nor things present and threatening, nor things to come, nor powers,

2 Timothy 1:12

This is why I suffer as I do. Still, I am not ashamed; for I know Him [and I am personally acquainted with Him] whom I have believed [with absolute trust and confidence in Him and in the truth of His deity], and I am persuaded [beyond any doubt] that He is able to guard that which I have entrusted to Him until that day [when I stand before Him].

Hebrews 6:10-11

For God is not unjust so as to forget your work and the love which you have shown for His name in ministering to [the needs of] the saints (God’s people), as you do.

Hebrews 10:22

let us approach [God] with a true and sincere heart in unqualified assurance of faith, having had our hearts sprinkled clean from an evil conscience and our bodies washed with pure water.

Hebrews 11:13

All these died in faith [guided and sustained by it], without receiving the [tangible fulfillment of God’s] promises, only having seen (anticipated) them and having welcomed them from a distance, and having acknowledged that they were strangers and exiles on the earth.

1 John 1:8

If we say we have no sin [refusing to admit that we are sinners], we delude ourselves and the truth is not in us. [His word does not live in our hearts.]

1 John 3:14

We know that we have passed out of death into Life, because we love the brothers and sisters. He who does not love remains in [spiritual] death.

1 John 3:21

Beloved, if our heart does not convict us [of guilt], we have confidence [complete assurance and boldness] before God;

Treasury of Scripture Knowledge

Summary

1 John 3:19

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

Shall

Assure

Bible References