Have you ever wondered why we build temples? Well, President Nelson paints a pretty good picture of why right here.
My dear brothers and sisters, here is my promise. Nothing will help you more to hold fast to the iron rod than worshipping in the temple as regularly as your circumstances permit. Nothing will protect you more as you encounter the world’s mists of darkness. Nothing will bolster your testimony of the Lord Jesus Christ and His Atonement or help you understand God’s magnificent plan more. Nothing will soothe your spirit more during times of pain. Nothing will open the heavens more. Nothing!
The temple is the gateway to the greatest blessings God has in store for each of us, for the temple is the only place on earth where we may receive all of the blessings promised to Abraham.
Rejoice in the Gift of Priesthood Keys (churchofjesuschrist.org)
We believe we are in the last days when the powers of darkness are the strongest. The saints can receive strength by worshiping in the temple. Those are some pretty amazing blessings President Nelson promised.