Jesus said, “Therefore everyone who hears these words of Mine, and acts on them, may be compared to a wise man, who built his house upon the rock…and everyone who hears these words of Mine, and does not act on them, will be like a foolish man, who built his house upon the sand.” What is the difference between building your house on the rock or on the sand?
Jesus is speaking symbolically here. A house symbolizes a church. (Col. 4:15, Acts 2:46) The rock is a figure of Christ. (1 Cor. 10:4) Because man was made from the dust of the ground (Gen. 2:7) sand represents the teaching of man.
There is a big difference between the teaching of Jesus and the teaching of mankind. Rock does not change and thus symbolizes Jesus, who is the same for all time. (Heb. 13:8) In contrast to this, sand shifts with the tide the way the views of mankind shift to whatever is popular at the moment.
Most doctrinal error in the Bible came from trying to be like worldly people, or building the house on the sand. In the Old Testament, false religion was in the form of idol worship, which was the error of the surrounding peoples. The two main false teachings in the New Testament were the doctrine of the Judiazers, who pandered to the Jews who did not accept Jesus: and the Gnostic error, which tried to bend the gospel so it would appeal to non-Jewish unbelievers.
A lot of present day false teacing amounts to building the house on the sand, or appealing to the tastes of non-Christians. These heresies include acceptance of sleeping around, and the gay lifestyle, belief in evolution, and views on the role of women. When people say, “You can’t believe that: this is the 21st century!” They are building their house on the sand.
It is to be noted that most literal houses are built on sand, like many churches consider God to have a 21st century way of looking at things. Jesus actually predicted this in Matthew 7:13-14. “Enter by the narrow gate, for the gate is wide, and the way is broad that leads to destruction, and many are those who enter by it. For the gate is small, adn the way is narrow that leads to life, and few are those who find it.” Will you build your house on th erock or on the sand?