6, 7. (a) Why will the animal creation not be any threat to humans? (b) What prophecy in this regard will have a literal fulfillment?

⁶ The animal creation will not do injury or be any threat to the dwellers in the restored Paradise. God will return to the lower creatures any lost measure of fear of humans. Thus we can look for the charming description of animal life that is set out in Isaiah 11:6-9 to have a literal fulfillment during the Millennial Reign of the “Prince of Peace”:

⁷ “The wolf will actually reside for a while with the male lamb, and with the kid the leopard itself will lie down, and the calf and the maned young lion and the well-fed animal all together; and a mere little boy will be leader over them. And the cow and the bear themselves will feed; together their young ones will lie down. And even the lion will eat straw just like the bull. And the sucking child will certainly play upon the hole of the cobra; and upon the light aperture of a poisonous snake will a weaned child actually put his own hand. They will not do any harm or cause any ruin in all my holy mountain; because the earth will certainly be filled with the knowledge of Jehovah as the waters are covering the very sea.”

8. What is meant by the prophetic statement that the serpent’s food “will be dust”?

⁸ It would be inconsistent for God to inspire such a prophecy to have only a spiritual meaning and not to reflect such things in actual earthly life. Similarly, Isaiah 65:25 tells us: “The wolf and the lamb themselves will feed as one, and the lion will eat straw just like the bull; and as for the serpent, his food will be dust.” Does this signify the annihilation of the serpent family out of the global garden of Eden? No, the prophetic statement that the serpent’s food “will be dust” means that members of the reptile family will never again be a menace to the life and good health of human creatures. They will have to recognize that humankind is their master who has dominion over everything that moves upon the earth, just as was the case of Adam in the garden of Eden when he named all the animals without fear.​—Genesis 2:19, 20; Hosea 2:18.

In any event, all language barriers will be wiped out. You will be able to travel anywhere and communicate with people. You will be able to understand them, and they will be able to understand you. There will be one language for all mankind, and it would be appropriate for the entire Bible to be available in that language. (Compare Zephaniah 3:9.) In that language all the earth will be filled with the knowledge of Jehovah “as the waters are covering the very sea.”​—Isaiah 11:9.