God sees through his promises

I was thinking last night about prayer and how God does not always answer immediately

Abraham and Sarah waited many years after God promised he would be the father of many nations.
Isaac and rebecca waited 20 years before they had Esau and Jacob
Jacob, their son waited many years before Rachael who was the love of his life gave birth to Joseph.

There is clearly a partern there in that family.

They all had to wait patiently but God saw his promise through all the way