"Monument" is a symbol of the spiritual "Firmament" of the Will of God, the immutability of His Commandments, which for man are a spiritual Sanctuary, an eternal reminder of the need to fulfill them.
"Monument" is also a memory of the sacrificial, pious life of all the Righteous, who by their selfless fulfillment and preaching of the Will of God revealed to the nations the true way of life.
The "Monument" is also a symbol of man's victory over his sinful motives and unrighteous deeds through unswerving adherence to God's Commandments.