James 2:13

13 because judgment without mercy will be shown to anyone who has not been merciful. Mercy triumphs over judgment.

Read James 2:13 Using Other Translations

For he shall have judgment without mercy, that hath shewed no mercy; and mercy rejoiceth against judgment.
For judgment is without mercy to one who has shown no mercy. Mercy triumphs over judgment.
There will be no mercy for those who have not shown mercy to others. But if you have been merciful, God will be merciful when he judges you.