Genesis 22-23
“God will provide for himself the lamb for a burnt offering, my son” (v8). Though we can’t imagine how terrible this test of faith was, Abraham was confident that God didn’t really want to kill Isaac (child sacrifice was abhorrent to God; Ezekiel 20:31). Hebrews says that Abraham thought God might raise Isaac from the dead (11:19). Whatever Abraham thought, he had faith in God’s character.
Abraham was never perfect, but he trusted God with his entire life and future (v12). Having “faith like Abraham’s” means trusting the One who proved His love by dying for us.