Charles Spurgeon Commentary 1 John 3:10

"In this the children of God are manifest, and the children of the devil: whosoever doeth not righteousness is not of God, neither he that loveth not his brother." — 1 John 3:10 (ASV)

In this the children of God are manifest, and the children of the devil: whosoever doeth not righteousness is not of God, neither he that loveth not his brother.

Holiness and love are the marks of the true child of God; and where these are not to be found, a man must not prop himself up with any notion that salvation is his, for he is no child of God.

In this the children of God are manifest, and the children of the devil: whoever does not do righteousness is not of God, neither he who does not love his brother.

An unlovely spirit is also self-condemnatory as being an unholy spirit; in fact, a lack of love is a lack of righteousness. There are some who profess to be so righteous that they condemn everybody else, and they have no deep compassion for those who are suffering as a consequence of their fault.

But oh, beloved, it is one thing to hate sin, and it is another thing to hate the sinner! Let your indignation burn against everything that is evil; but still, towards the one who has done wrong, always have the gentle thought of pity, and offer prayer for him that he may leave his sin and turn to his gracious God.

It may be difficult to reach this point, but there should always be just that right mixture in the mind and heart of the child of God—love for the sinner and hatred of his sin.