Hearers and Doers

 ​"Therefore whoever hears these sayings of Mine, and does them, I will liken him to a wise man who built his house on the rock: and the rain descended, the floods came, and it did not fall, for it was founded on the rock. But everyone who hears these sayings of Mine, and does not do them, will be like a foolish man who built his house on the sand: and the rain descended, the floods came and the winds blew and beat on that house; and it fell. And great was its fall." Matthew 7:24-2​7
 
In these passages of scriptures Jesus is teaching an outward conformity to Him is not enough; Jesus demands that we be doers of the word, not mearly hearers.
In Jesus' illustration of the two houses, each house looked the same from the outside. The real foundation of our life is usually hidden, and is only proven in the storm. The builder that heard the word and applied the word had solid foundation.
Merely hearing God's word isn't enough to provide a secure foundation. It is necessary that we are also doers of His word. If we are not, we commit the sin that will surely find us out, the sin of doing nothing- and great will be our fall.