have you not read,
Gen 26:5 Because that Abraham obeyed my voice, and kept my charge, my commandments, my statutes, and my laws.
Abraham received the promise because he obeyed God.
Abraham's
obedience was
the evidence of
his faith!
his faith in God and God's promises.
not the other way around.
that passage you quote is for Isaac's encouragement concerning the promises and provision.
of course Isaac is encouraged to be obedient - God was saying, He made promises to Abraham and Abraham believed God and obeyed, and everything He promised came to pass.
but the promises to Abraham were
not a result of his obedience!
the promises were made by God and Abram believed Him.
how do you obey/do according to something or someone you don't believe?
you'll have to show God saying to Abraham something like "Abram, if you do this, i'll do that" - He doesn't say that.
He does tell us Abraham believed THEN obeyed.
And he believed in the LORD, and He accounted it to him for righteousness.
^ the first time belief (faith) is mentioned in scripture, AND the first time righteousness is mentioned.
and the clear message is faith in/taking God at His Word is credited as righteousness.
.....
Romans 4:1-3
What then shall we say that Abraham our father has found according to the flesh? For if Abraham was justified by works, he has something to boast about, but not before God. For what does the Scripture say? “Abraham believed God, and it was accounted to him for righteousness.”
Romans 4:9-10
Does this blessedness then come upon the circumcised only, or upon the uncircumcised also? For we say that faith was accounted to Abraham for righteousness. How then was it accounted? While he was circumcised, or uncircumcised? Not while circumcised, but while uncircumcised.
Romans 4:19-24
And not being weak in faith, he did not consider his own body, already dead (since he was about a hundred years old), and the deadness of Sarah’s womb. He did not waver at the promise of God through unbelief, but was strengthened in faith, giving glory to God, and being fully convinced that what He had promised He was also able to perform. And therefore “it was accounted to him for righteousness.” Now it was not written for his sake alone that it was imputed to him, but also for us. It shall be imputed to us who believe in Him who raised up Jesus our Lord from the dead.
Galatians 3:5-7
Therefore He who supplies the Spirit to you and works miracles among you, does He do it by the works of the law, or by the hearing of faith?; just as Abraham “believed God, and it was accounted to him for righteousness.” Therefore know that only those who are of faith are sons of Abraham.
k.
God Bless