And in the Earth Are Signs for Those Who Have Certainty — Every Atom Is Evidence

Verse: "And in the earth are signs for those who have certainty — and in yourselves. Will you not then see?" (51:20-21)

Why "those with certainty" and not "believers"?
Faith is a degree; certainty (yaqeen) is higher — it is faith unshakeable by doubts. The signs in the earth can only be seen by one who seeks them with a certain eye, not a wavering doubting mind.

Signs in the earth:
Soil that grows, rain that revives, diversity of creatures sharing one earth — a divine system of such precision that if one component changed by a fraction, all life would fail.

"And in yourselves — will you not then see?":
Signs in your bodies: blood flowing unfelt; your heart beating 100,000 times daily without your command; your immune system distinguishing self from foreign with astonishing precision — who programmed you?

Lesson: You need no travel and no laboratory to find Allah — the miracle is in your body right now.