Faith is born of knowledge. It first breathes the breath of life in the hearts of those who believe in God and who know what kind of a being he is. Then, as a newborn baby, it begins to grow by obedience to the laws of the Lord. It reaches full maturity when its possessor, through righteousness, gains the assurance that his way of life conforms to the divine will.
Elder Bruce R. McConkie, "A New Witness for the Articles of Faith"
We hear over and over that we need to have faith in Jesus Christ to survive this life spiritually. Is it enough to just believe in Christ? Is that faith?
I would venture to say that this belief is not enough. It just will not suffice. Period. Faith, without works, is dead. Belief plus action is what's required. So what actions need to happen?
Well, as Elder McConkie says, knowledge is where faith is born. We have to first learn God's Law and, then, we can apply it and help others apply it. So the more we learn, the more we apply it, and the stronger our faith is. And we need to have strong faith. We have to have it.
So, what we need to do is learn. We need to study. We need to read. We need to memorize. We need to ponder. We need to pray. The more we know of God and Christ, the closer we are to Them. And the closer we are to Them, the more we want to obey Them and be like Them. Then we will live with Them. And THAT is why we're here.