Here's a guote from that book:
GETHSEMANE AND A MODERN EXPERIENCE
As a student of the Savior's experience in Gethsemane, I had a profound experience which will forever remain etched in my memory. Brigham Young University maintains a study center on the Mount of Olives, overlooking the very places of our Lord's ministry. Three olive presses are situated on the grounds, where they serve both as object lessons and as invitations to explore ancient olive culture.
One fall semester I supervised the students at the BYU Jerusalem Center as they participated in their own olive harvest and pressing activity. The olives were placed in the yam, or rock basin, and the crushing stone was pushed around and around the basin until the olives began to ooze their oil. When the oil began to run down the lip of the limestone basin, it had the distinctive red color characteristic of the first moments of the new pressing each year. At that instant an audible gasp came from the 170 students who surrounded the olive press to witness our recreation of the ancient pressing process. It was a stunning, even chilling, minute until the oil turned back to its usual golden color.
I believe everyone in that group had the same thought as we watched this happen. It was more than just an amazing confirmation of the symbolism we had discussed. This was, right before our very eyes, a real-life reflection of Gethsemane.
As those who have lived in or visited the Holy Land know, a person cannot escape the image of the olive tree. Olive vineyards and ancient olive presses seem to be everywhere, and visitors' hearts and minds become acutely attuned to their existence. Especially after witnessing an olive harvest, visitors never look at olive trees the same way again. They never regard them as they might have in the past, never view them as being common or an ordinary part of the landscape. Olive trees are extraordinary trees in an extraordinary land. They are part of the landscape of belief. It is not by accident that we anoint those seeking a blessing with olive oil.
Olive trees and the oil derived from their fruit are the most powerful and plentiful symbols in the Holy Land of Jesus Christ, the Master Healer, who was born into a land with abundant reminders of his divinity. Olive trees are witnesses of his and his Father's love. Just as olive trees and olive oil are gifts from God Deuteronomy 6:10-11; 11:14), so too is the Savior our great gift from God (John 3:16), and the effects which flow from his atonement — eternal life — "is the greatest of all the gifts of God" (D&C 14:7). In the place called the "oil press," Gethsemane, the Savior was pressed in our behalf as he wrought for all mankind the infinite and eternal atonement. Just as the olive tree and olive oil may sustain our lives temporally, so does the Savior sustain our lives eternally.
From “Gethsemane” by Andrew Skinner
https://video.byui.edu/media/Andrew+C.+ ... u/13946522
http://files.dustinwoodard.net/document ... kinner.pdf