Caravaggio, Saint Jerome Writing (c. 1605), Galleria Borghese. Public domain.
3 verses in the King James Version. Word study for “heart” →
And oppress not the widow, nor the fatherless, the stranger, nor the poor; and let none of you imagine evil against his brother in your heart.
And they of Ephraim shall be like a mighty man , and their heart shall rejoice as through wine: yea, their children shall see it , and be glad; their heart shall rejoice in the LORD .
And the governors of Judah shall say in their heart, The inhabitants of Jerusalem shall be my strength in the LORD of hosts their God.