cover the mercy # 03_LEV_16_13 # And he shall put the incense upon the fire before the LORD, that the cloud of the incense may cover the mercy seat that [is] upon the testimony, that he die not: 
over the mercy # 02_EXO_37_09 # And the cherubims spread out [their] wings on high, [and] covered with their wings over the mercy seat, with their faces one to another; [even] to the mercy seatward were the faces of the cherubims.