Before the vicissitudes and storms of life come upon you, it is important to be built upon a sure foundation. The Savior taught, "Whosoever cometh to me, and heareth my sayings, and doeth them, I will shew you to whom he is like: He is like a man which built an house, and digged deep, and laid the foundation on a rock: and when the flood arose, the stream beat vehemently upon that house, and could not shake it: for it was founded upon a rock" (Luke 6:48). When the rains and storms come, it is too late to build your house upon the rock; it needs to be done before the storms hit. When the rains and floods came in Noah's day, it was too late for the people to start building their own arks. When the time for performance has come, the time for preparation has passed.
I'll return to a scripture I quoted earlier. "And now I, Jacob, am led on by the Spirit unto prophesying; for I perceive by the workings of the Spirit which is in me, that by the stumbling of the Jews they will reject the stone upon which they might build and have safe foundation" (Jacob 4:15). Jacob continues, setting up his next great lesson, which is found in Jacob 5: "But behold, according to the scriptures, this stone shall become the great, and the last, and the only sure foundation, upon which the Jews can build. And now, my beloved, how is it possible that these, after having rejected the sure foundation, can ever build upon it, that it may become the head of their corner?" (Jacob 4:16-17).
Before I provide Jacob's answer to that question I want to mention a couple things. The stone that Jacob writes about is the great, the last, and the only sure foundation that the Jews and that any of us can build upon. We live in a tumultuous time. Not only is marriage under attack by high divorce rates, cohabitation, and children born out of wedlock, but now it is under attack by those who would seek to redefine what constitutes a marriage. Friends strive against friends - there is hatred all around. People talk of justice, rights, fairness, and acceptance yet ignore and fight morality, religion, and God. The cacophony of clamoring voices is great; this "progressive" symphony of dissonance and din is full of nothing but tinkling cymbals and sounding brass (see 1 Cor. 13:1). Through the tumult, the confusion, and the strife, there is a single clarion call - a call to the one sure way, one sure foundation, and one sure stone! This stone is like a light bursting through the darkness, like the stones made by the brother of Jared that shone with the light of the Lord. This stone is the light of the First Vision, rending through the darkness of the ages, anchoring humankind to their sure foundation. We must never let go of this stone - our True Anchor - even though mobs may assemble and calumny may defame (see History of the Church, 4:540).
Link to part 2 of this essay.