John 3:16 says that because God loved us, He gave His only begotten Son so that everyone who believes in Him should not perish, but have eternal life. This verse indicates that God saves us because He loves us. Furthermore, in Ephesians 2:5 and 8 we are told that we are saved by grace. The book of Romans, however, reveals that we are saved by righteousness. In this booklet, compiled from the Life-study of Romans, Witness Lee explains why righteousness is the power of the gospel and why righteousness is necessary in order for God to produce many sons through the gospel.