There are two types of miracles: Supernatural miracles and intranatural miracles.

The water of the Nile turning into blood was entirely supernatural. The victory of the Maccabees over the Greek army came dressed as a natural occurrence—they had to fight to win.

Both types of miracles are necessary.

If we would see only miracles beyond nature, we would know that G‑d can do whatever He likes—but we might think He must break the rules to do so. We would know a G‑d who is beyond the natural world, but not within it.

If we would see only miracles that are clothed within nature, we would know a G‑d that is Master of all that happens within nature.
But we might think He is limited by the laws of nature.

Now we know a G‑d that is at once both beyond all things and within them. In truth, there is nothing else but Him.