Of course it was before Gen 15, I speaking of Gen 12:4 whereby Abram begins his walk, by faith, which was also BEFORE meeting good ol' Mel.
You still haven't, and apparently won't, come near this fact. But that isn't my real point, mainly just as side issue. The FACT is that scripture states Abraham was declared righteous NOT prior to faith but BECAUSE of his Faith.
That is just an issue you will have to come to terms with.
Nobody is truly righteous, as God defines righteousness before Him.
Isaiah said it: all our righteousnesses are as filthy rags before thee.
Paul reaffirmed it: not by our righteousnesses which we have done, but according to His mercy He saved us.
All of God's people's righteousnesses are in Christ, not out of Him.
Their acceptance as holy and faultless or blameless before God is because of Christ. Accepted in the beloved, is the term used by Scripture.
Any declaration of God regarding anyone of His people is because of their standing in Christ, not out of, and not inspite of them.
Abraham's faith is proof of his righteousness IN Christ, of his being a regenerate son of God.
If anyone can be accepted and declared righteous by God because of inherent faith in that anyone, then Christ's blood and death are meaningless.