What Does Genesis 22:10 Mean?

"Do not lay a hand on the boy," he said. "Do not do anything to him. Now I know that you fear God, because you have not withheld from me your son, your only son." The divine declaration "now I know that you fear God" is the explicit statement of what the test was designed to confirm. God's omniscience is not in question; the test was not to provide new information to God but to produce in Abraham the demonstrated reality of what he claimed to believe. The test externalizes and confirms the internal. What Abraham knew he believed becomes what he showed he believed through the specific, bodily act of the bound son and the raised knife.

The statement "you have not withheld from me your son, your only son" uses the same verb that will appear in verse 16 as the grounds of the covenant's most emphatic reaffirmation. The not-withholding is the act that unlocks the promise's full expression. Abraham withheld nothing, not the son given after twenty-five years of waiting, not the covenant heir through whom all the promises were to come. The total availability of the patriarch to the divine will, demonstrated in the most extreme imaginable form, is the covenant-confirming act of the chapter.

Paul's Romans 8:32 explicitly mirrors this verse: "He who did not spare his own Son" (not-withhold) "but gave him up for us all" (the not-withholding extended). The Father's act at the cross is modeled on, and goes beyond, what the Father required of Abraham: Abraham was stopped; the hand was not stopped for the Son. "Now I know that you fear God" is the divine verdict on the Akedah; the same verdict, vindication through the completed sacrifice, is given at Easter morning when the empty tomb confirms that the Father accepted the Son's offering.