The blood of the slain goat was taken into the Holy of Holies behind the sacred veil and sprinkled on the mercy seat, the lid of the ark of the covenant.
From the en.wikipedia.org
The Priestly Code, containing extensive laws concerning rituals and more general situations is given from above the mercy seat in the Tabernacle, once the Ark and Tabernacle have been completed.
From the en.wikipedia.org
The shadow of his wings falls over the seat of mercy on the side of the ark.
From the blog.beliefnet.com
It isn't frequent that we come face to face with violent behavior that leaves us at the seat of mercy.
From the blogs.psychcentral.com
It may help us rewire our brains so we're less at the mercy of maladaptive knee-jerk reactions and more in the driver's seat of our decisions.