Romans 4:20-24

yet, looking unto the promise of God, he wavered not through unbelief, but waxed strong through faith, giving glory to God, and being fully assured that what he had promised, he was able also to perform. Wherefore also it was reckoned unto him for righteousness. Now it was not written for his sake alone, that it was reckoned unto him; but for our sake also, unto whom it shall be reckoned, who believe on him that raised Jesus our Lord from the dead