There's a hymn called "Peace in the Valley" written by Thomas A. Dorsey in 1938.

Elvis made the hymn famous when he sung it on the Ed Sullivan Show in 1957 in support of Hungarian refugees.

From Wikipedia-

The song achieved mass coverage during Elvis Presley's third and final appearance on The Ed Sullivan Show on January 6, 1957. Before an audience estimated at 54.6 million viewers, Presley closed the show by dedicating the song to the 250,000 refugees fleeing Hungary after the 24 and 31 October 1956 double-invasion of that country by the Soviet Union. Because he also requested that immediate aid be sent to lessen their plight, the appeal in turn yielded contributions amounting to US$6 million, or the equivalent of US$49.5 million in today's money.

https://en.wikipedia.org/wiki/Peace_in_the_Valley

In any case, the lyrics contain the verse "And the lion shall lay down by the lamb."

Peace in the Valley

 Oh well, I'm tired and so weary
 But I must go alone
 Till the lord comes and calls, calls me away, oh yes
 Well the morning's so bright
 And the lamp is alight
 And the night, night is as black as the sea, oh yes

 There will be peace in the valley for me, some day
 There will be peace in the valley for me, oh Lord I pray
 There'll be no sadness, no sorrow
 No trouble, trouble I see
 There will be peace in the valley for me, for me

 Well the bear will be gentle
 And the wolves will be tame
 And the lion shall lay down by the lamb, oh yes
 And the beasts from the wild
 Shall be led by a child
 And I'll be changed, changed from this creature that I am, oh yes

 There will be peace in the valley for me, some day
 There will be peace in the valley for me, oh Lord I pray
 There'll be no sadness, no sorrow
 No trouble, trouble I see
 There will be peace in the valley for me, for me 

Here's Elvis singing it - https://www.youtube.com/watch?v=SMD8d7oUjxw

Now read the whole verse in Isaiah. As you can see, the lion and wolf are both present.

Isaiah 11:6-7

6 The wolf also shall dwell with the lamb, and the leopard shall lie down with the kid; and the calf and the young lion and the fatling together; and a little child shall lead them.

7 And the cow and the bear shall feed; their young ones shall lie down together: and the lion shall eat straw like the ox.

Martin Luther used the phrase in a Nobel Prize acceptance speech -

And the lion and the lamb shall lie down together and every man shall sit under his own vine and fig tree and none shall be afraid.

I too remember people saying "lion shall lay down with the lamb" but I didn't read the Bible much before 2007.

This is from Gill's Exposition of the Bible-

Ephraim shall not envy Judah, nor Judah vex Ephraim; the sticks of Joseph and Judah shall be one nor will there ever be any more discord between Jew and Gentile, the lion and the lamb shall lie down together; there will be no more war among the nations, after the battle of Armageddon; and no more persecution, after the slaughter of the witnesses; and this abundance of peace, spiritual and temporal, will be as long as the moon endures, ( Psalms 72:7 ) and all this will issue in eternal peace in the world to come: upon the throne of David, and upon his kingdom;

https://www.biblestudytools.com/commentaries/gills-exposition-of-the-bible/isaiah-9-7.html

Many pastors used this book as a resource to write their sermons, as Gill was a contemporary of Charles Spurgeon.

For this particular example, I can see why people would think this could be an example of the Mandela Effect but not sure on this one.