G2588–καρδία–kardia

and her children I will kill in death, and know shall all the assemblies that I am he who is searching reins and hearts; and I will give to you -- to each -- according to your works.

καρδίας, kardias “hearts,”

for God did give into their hearts to do its mind, and to make one mind, and to give their kingdom to the beast till the sayings of God may be complete,

καρδίας kardias “hearts”

`As much as she did glorify herself and did revel, so much torment and sorrow give to her, because in her heart she saith, I sit a queen, and a widow I am not, and sorrow I shall not see;

καρδίᾳ kardia “heart”