For all who will have a blessing at my hands shall abide the law which was appointed for that blessing

 After graduating from medical school, I pursued advanced education in surgery. At that time there was no such thing as heart surgery. Then I teamed up with other researchers in the daunting task of making an artificial heart and lung machine. We knew that such an apparatus could possibly maintain the body’s circulation while repairs might be made on the heart. But during that early era, there was much we did not know.

Then one day, two truths articulated in the Doctrine and Covenants spoke to my inquiring mind. These truths were, first, that all blessings are predicated upon obedience to law3 and, second, that to every kingdom there is a law given.4

Well, I reasoned that if every kingdom had a law, there must be laws that govern the beating heart. I was determined to discover those laws and obey them. By doing so, blessings would come and lives could be saved.

In medical school I had been taught that if one touched the beating heart, it would stop beating. However, one of the first laws we discovered in the lab was that we could touch the heart of an animal without losing its heartbeat. This finding opened the door later to uncovering another law that made more complex open-heart operations possible.

We learned that if we added potassium chloride to blood flowing into the coronary arteries, thereby altering the normal sodium/potassium ratio, the heart would stop beating instantly. Then, when we nourished the heart with blood that had a normal sodium/potassium ratio, the heart would spring back to its normal beating pattern. Literally we could turn the heart off long enough to repair it and then turn it back on again.

Decades later, when I explained this to a group of medical students, one prominent professor asked, “But what if it doesn’t work?” My answer? It always works, because it is based on divine law.

Divine law is incontrovertible! The same can be said of the law of gravity and the laws of foil and lift that allow airplanes to fly. Each is an absolute truth. Doctors or pilots do not have the power to change those laws, but their understanding of them safeguards lives.

My dear brothers and sisters, divine laws are God’s gifts to His children. Just as our family’s rules kept our children safe as they grew to adulthood, just as divine laws governing the heart and the flight of airplanes keep you safe on an operating table or while traveling, abiding by God’s laws will keep you safe as you progress toward eventual exaltation. Let me say it as succinctly as I can: As you abide by God’s laws, you are progressing toward exaltation.

The Prophet Joseph Smith taught that God “institute[d] laws whereby [we] could have a privilege to advance like himself.”5 God’s greatest blessings are reserved for those who obey His laws, as He explained: “For all who will have a blessing at my hands shall abide the law which was appointed for that blessing.”6 God’s laws are motivated entirely by His infinite love for us and His desire for us to become all we can become.

The Love and Laws of God
Russell M. Nelson
President of The Church of Jesus Christ of Latter-day Saints
September 17, 2019