Missing Link? Faith and Biblical Truth

With my engineering and marketing background, I'm intrigued by cause/effect relationships we see in every day life.
Sometimes you'll see an interesting article about the statistics or analysis of how one thing seems directly related to another.

For example, people living in sunny geographies tend to suffer less depression than those in consistently cloudy/overcast areas.

Other direct cause and effect relationships are more difficult to prove outright, so they are called "hypotheses" from the Greek origin for "proposition."

In that context, although some professionals hypothesize that eating dark chocolate might be healthy (deliver healthy antioxidants), the health benefit could be offset if you eat too much of it to the detriment of the sugar and calories.
A more complex hypothesis is that people with optimistic, positive attitudes tend to live healthier lives. You could debate/study whether they are optimistic because they are healthy, or healthy because they are optimistic, etc.

My hypothesis:
"The strength of a Christian's spiritual faith is in direct proportion to their belief in biblical truth."

Without statisical proof, I've based my proposition on many conversations with friends, family and strangers.
The trend I've seen is that stated faith can be shaken in anyone's life. Lose your job, get cancer, have financial trouble.
Some people steep their faith in prayer and worship, others in community support. There's no single best mix to strengthening and cultivating our faith.
My premise is that the strength of the faith we do have is at its strongest when rooted back in the scripture that God provides.
Biblical truth explains that God will not abandon us, will not tease or toy with us, and will always forgive a repentant, humble heart.
Faith that cannot follow its unraveled (or unraveling) thread back to scripture will struggle and perhaps founder. Not so when we can read, study and meditate on tangible solutions that God has literally placed in our hands.

"But not all accepted the good news. For Isaiah says, 'Lord, who has believed our message?' Consequently, faith comes from hearing the message, and the message is heard through the word of Christ." Romans 10:16

The strength of a Christian's spiritual faith is in direct proportion to their belief in biblical truth.

What do you believe?