John the Apostle
1 John 3:20BSB·traditional attribution

Even if our hearts condemn us, God is greater than our hearts, and He knows all things.

John Calvin Reformed @genevareformer

20. For if our heart condemn us He proves, on the other hand, that they in vain possess the name and appearance of Christians, who have not the testimony of a good conscience. For if any one is conscious of guilt, and is condemned by his own heart, much less can he escape the judgment of God.

Matthew Henry Presbyterian @wholebiblehenry

The apostle, having intimated that there may be, even among us, such a privilege as an assurance or sound persuasion of heart towards God, proceeds here, I. To establish the court of conscience, and to assert the authority of it: For, if our heart condemn us, God is greater than our heart, and knoweth all things, Jo1 3:20.

Commenting on 1 John 3:20-22

John Gill Reformed Baptist @doctorgill

Beloved, if our heart condemn us not,.... Which must be understood, not of a stupidity of mind, as is in unregenerate men, who have no sense of sin, no sorrow for it, or remorse of conscience on account of it; or as is in them who are past feeling; having their consciences seared as with a red hot iron; such cannot be entitled to the...