According to Meriam Webster, Rock means:
: to move (someone or something) back and forth or from side to side
: to cause (something) to shake violently
a rock is a naturally occurring solid aggregate of one or more minerals or mineraloids. Three major groups of rocks are defined: igneous, sedimentary, and metamorphic. (from Wikipedia)
And n the Bible, you can find the word “rock” in 106 verses.
Rock has been used in the Bible repeatedly to define its strength. And literally, the bigger the rock, the stronger it is. That is why it is used abundantly as a foundation for construction of buildings, houses, bridges and others.
In real life, the strongest and the biggest rock that we can put our faith on is Christ. What or who can make us fear? Nothing. Nothing will shake a person who has been living with Him. Even in the stormiest weather, He will be with us. In the darkest hour, He will be the Light. And in our greatest fear, we will not be afraid, we will not be shaken. As what in Luke 6:48 says, “They are like a person building a house, who dug a deep hole to lay the foundation on rock. When a flood came, the floodwaters pushed against that house but couldn’t shake it, because it had been founded on the rock. “
Believe in that.