30 then hear from heaven, your dwelling place. Forgive, and deal with everyone according to all they do, since you know their hearts (for you alone know the human heart),

Read 2 Chronicles 6:30 Using Other Translations

Then hear thou from heaven thy dwelling place, and forgive, and render unto every man according unto all his ways, whose heart thou knowest; (for thou only knowest the hearts of the children of men:)
then hear from heaven your dwelling place and forgive and render to each whose heart you know, according to all his ways, for you, you only, know the hearts of the children of mankind,
then hear from heaven where you live, and forgive. Give your people what their actions deserve, for you alone know each human heart.