How do we know Jesus is the rock we should build our lives on?

Throughout the New Testament, Jesus is referred to as the rock (1 Corinthians 10:4). As the immovable and unchangeable foundation, He fulfills the law and embodies righteousness, making Him the only reliable source for salvation. Believers are encouraged to cast their hopes on Him, understanding that all human efforts (the sandy foundation) will ultimately fail under the weight of God's judgment. When we build our lives anchored in His work, we experience true stability, as affirmed in passages like Romans 3:31, highlighting that our faith establishes the law.