Abraham expected to offer Isaac for a burnt-offering, and expected then to see Isaac rise from the ashes and go back with him. For the word of God had gone forth, In Isaac shall thy seed be called, and, Thy seed shall be as the stars of heaven for multitude. And Abraham would trust that word only that it could never fail. Heb. 11:17-19.
THIS IS FAITH. And thus "the scripture was fulfilled which saith, Abraham believed God, and it was imputed unto him for righteousness." James 2:23. But yet above this, "It was not written for his sake alone, that it was imputed to him; but for us also, to whom it shall be imputed; if we believe on him that raised up Jesus our Lord from the dead; who was delivered for our offenses, and was raised again for our justification." Rom. 4:23-25.
To trust the word of God only; to depend upon the word of God only; and to depend upon the word of God, even as against the word of God—this is FAITH: this is the faith which brings the righteousness of God.
This is what it is to exercise faith. This is "what the Scripture means when urging upon us the necessity of exercising faith." And "understanding how to exercise faith," this is the science of the gospel. And the science of the gospel is the science of sciences.
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