Well, if I am going debate biblical events and biblical teachings, I should put some biblical information forth, just to close:
Paul's Letter to the Galatians 3:16-19
16 The promises (of salvation) were spoken to Abraham and to his seed. Scripture does not say “and to seeds,” meaning many people, but “and to your seed,”[i] meaning one person, who is Christ. 17 What I mean is this: The law, (Jewish law) introduced 430 years later, does not set aside the covenant (the one between God and Abraham) previously established by God and thus do away with the promise (of salvation). 18 For if the inheritance (God's favor) depends on the law (Jewish law), then it no longer depends on the promise (of salvation); but God in his grace gave it to Abraham through a promise (of salvation).
19 Why, then, was the law (Jewish law) given at all? It was added because of transgressions (Adam's sin) until the Seed (Christ) to whom the promise (of salvation) referred had come. The law (Jewish law) was given through angels and entrusted to a mediator (Christ).
Paul's Letter to the Galatians 3:16-19
16 The promises (of salvation) were spoken to Abraham and to his seed. Scripture does not say “and to seeds,” meaning many people, but “and to your seed,”[i] meaning one person, who is Christ. 17 What I mean is this: The law, (Jewish law) introduced 430 years later, does not set aside the covenant (the one between God and Abraham) previously established by God and thus do away with the promise (of salvation). 18 For if the inheritance (God's favor) depends on the law (Jewish law), then it no longer depends on the promise (of salvation); but God in his grace gave it to Abraham through a promise (of salvation).
19 Why, then, was the law (Jewish law) given at all? It was added because of transgressions (Adam's sin) until the Seed (Christ) to whom the promise (of salvation) referred had come. The law (Jewish law) was given through angels and entrusted to a mediator (Christ).