Altar stone
In Exodus 20:25, this signifies truths formed from good, or good in form, to signifies that nothing of self-intelligence should be involved in its forming. (Apocalypse Explained 391[21, 21])
Isaiah 60:7
7
All the flocks of Kedar shall be gathered together to you, the rams of Nebaioth shall minister to you; they shall come up with acceptance on my altar; and I will glorify the house of my glory.