Mosiah 3:15

And many signs, and wonders, and types, and shadows shewed he unto them, concerning his coming; and also Holy Prophets spake unto them concerning his coming; and yet they hardened their hearts, and understood not that the law of Moses availeth nothing, except it were through the atonement of his blood;

He showed them many signs and wonders about Christ’s coming. Holy prophets told them about his coming too. But they made their hearts hard. They did not understand that the law of Moses could not help them without Christ’s blood paying for their sins.

“He showed them countless signs, wonders, symbols, and glimpses of Christ’s coming. Holy prophets spoke to them about it. Still, they hardened their hearts. They didn’t understand that the law of Moses means nothing without Christ’s atoning blood.”