John was at the funeral of a friend.
One man stood up and said, "I owed him $100, so I'm placing it in his coffin."
Another man said, "I also owed him $100, so I'm placing it in his coffin."
John's conscience was bothering him.
So, he said, "I also owed him $100."
Then, he went to the coffin, wrote a check for $300 and took the other two $100 bills.

1 John 3:18-21
18 My little children, let us not love in word, neither in tongue; but in deed and in truth.
19 And hereby we know that we are of the truth, and shall assure our hearts before him.
20 For if our heart condemn us, God is greater than our heart, and knoweth all things.
21 Beloved, if our heart condemn us not, then have we confidence toward God.

Light from the Word.
Notice the statement concerning "truth" in verse 18.

We ALL have a conscience.
Whether or not conscience comes from an innate quality planted by God at birth, or by societal standards taught to us from birth does not matter.
What matters is we HAVE a conscience!

Christians have a double empirical knowledge of right and wrong.
We have that conscience, AND we have the Holy Spirit of God.
BOTH tell us when we are wrong.

If our love toward others is only in "word" or "tongue" we KNOW it!

And THAT is why many Christians live defeated and pessimistic lives!

Instead of repenting in tears, some Christians continue to "love" only as it suits them - not for the benefit of others.

And that conscience, "heart," speaks condemnation.
Also God's Holy Spirit speaks to the heart about it.

For "confidence" to be in the life, repentance must be made.

Rom 12:9-10 says,
"9 Let love be without dissimulation (hypocrisy or unfeigned).
Abhor that which is evil; cleave to that which is good.
10 Be kindly affectioned one to another with brotherly love;
in honour preferring one another;"

Love ya!
Bro. Bruce