Abraham believed God and it was put to his account for righteousness....
THE BIGGEST, MOST FATAL error that leads to hell in this age is CONFLATING the truth that FAITH alone has ALWAYS saved the believer with the CONDITIONAL COVENANT of BLESSING IN THE LAND which was based UPON OBEDIENCE.......
Abraham was declared righteous before he was circumcised, therefore can be used as a type of NT believer. But we are not identical especially in what was believed to become righteous.
Agree, in this age, faith alone saves, no more of works.