1) we usually don't appreciate the strength we live by until it is taken from us. I usually assume that I am in control of my strength and live by my own power-until it's gone.
2) often we don't realize that our strength is gone until we try to call upon it in a time of need. In other words, I didn't realize how weak I was while laying in bed, it was when I needed to walk that I learned the extent of my weakness.
Today I read a story where the prophet Nephi taught a people that had experienced a time of great economic and social success. Life was great for them. And because life was great, they did not need help. They became very wicked and rejected and ignored God. Nephi gave them a warning that really stood out to me. "The Lord will not grant unto you strength, as he has hitherto done, to withstand against your enemies."
In other words, "although life seems good right now, someday you will face challenges, enemies. When that time comes, you will find that you have no strength because you haven't fought these spiritual diseases. You have allowed yourselves to become vulnerable and weak." Of course at this time the people didn't believe him because they didn't know they were weak. Life was very easy for them and they didn't seem to lack anything they needed. They didn't need strength to lay in bed all day. But soon great challenges would come to them and they would find that walking in a storm requires much more strength than laying on a bed. The strength they thought they had would be completely insufficient.
President Packer told the story of a young man who learned that he did not have power when he needed it.
"Years ago a family gathered at the bedside of an aged little Danish woman. Among them was her middle-aged, wayward son. For the past number of years he had been living at home.
Tearfully he pleaded, “Mama, you’ve got to live. Mama, you can’t die.” He said, “Mama, you can’t go. I won’t let you go.”
The little mother looked up at her son and in her broken Danish accent said, “But ver is yo powah?”--where is your power?"
(The Power of the Priesthood April 2010)
Jesus's disciples once felt that. Although they had done many mighty miracles and cast out devils in His name before, they encountered a boy with an affliction they could not heal. They could not cast the devil out of him. Jesus then came and cast the devil out. I can picture the disciples asking the same question as the little old mother "but where was our power?" Jesus told them that this particular affliction required greater strength. This kind goeth not out but by prayer and fasting. Even the power to heal and perform many miracles had not been enough to prepare them for this greater challenge. We must never stop developing spiritual strength.
(Matthew 17:14-21)
I have felt that too. When Tiah had mono, she asked me to give her a blessing. In that moment I realized that I had not been working very hard to develop my spiritual strength and I did not feel I had much power with which to bless her. That realization scared me. I never wanted to be left without sufficient power again.
I learned that the spiritual strength I need to stand during a pleasant weather system in life is not enough when the storm rolls in. If I do not prepare in advance, I may find myself unable to stand. I must remind myself that the smartest builders build structures that will withstand the worst weather, not just the current weather. That is because life, like weather, changes. And if we build only to suit current conditions, we won't be ready for the storms.