From the day we were saved, the Lord has been doing two things in us. On the one hand, He is tearing down our old habits, character, and disposition. This is the only way for Christ to express His life freely through us. If the Lord does not perform this work, His life will be frustrated by our natural life. On the other hand, the Holy Spirit is creating a new nature and a new character in us little by little, with its new living and new habits. The Lord is not only tearing down the old but also constituting us with the new. There is not only a negative tearing-down work, but also a positive constituting work in us.