Our life, you might argue, is one long test. In Hebrew, a "Nisayon." The word is
multi-dimensional, as it also contains the word,
"nes – miracle." The implication is that when we
rise to the occasion & pass our tests, miracles flow both to & through us.
The centerpiece of Vayera is the Akeida, the last & arguably the most difficult of Avraham’s 10 tests. But Avraham is not the only hero of this story. Yitzchak - no mere “lad” at age 37 - also submits to Hashem’s will.