"And he (Abraham) believed in the LORD; and He counted it to him for righteousness." Genesis 15:6

This is a significant verse and is quoted thrice in the New Testament
1. Galatians 3:6 - The emphasis here is on "believed".
2. Romans 4:3 - The emphasis here is on "counted".
3. James 2:23 - The emphasis here is on "righteousness".