Holy Mountains?
"His foundation is in the holy mountains." (Psalm 87:1)
Then, when the first nations failed and God had to form a new nation, it was on Mount Moriah that Abraham passed the great test with his son, Isaac, and became "the father of all them that believe," testifying that "in the mount of the LORD it shall be seen" (Romans 4:11; Genesis 22:14).
When the time came for God's law to be revealed, "the Lord came down upon mount Sinai," and gave Moses "upon mount Sinai, two tables of testimony, tables of stone, written with the finger of God" (Exodus 19:20; 31:18).