That is not what JWs do. They think they know what verses mean, how the meek will inherit the earth, for example.
They add boatloads of words, enough words to sink a large ocean-liner!
Below are some of those added words which lead them to the false conclusion that the earth will be restored to an Eden-like state where physical death will exist no more and dead people will be raised to live on earth for all of eternity. All those are based upon misinterpretations of scriptures.
Faithful to his word, Jehovah God will make sure that the promised inheritance is not only available but also restored in all its splendor. At
Revelation 21:4, God’s Word tells us that in the promised new world, God “will wipe out every tear from [people’s] eyes, and death will be no more, neither will mourning nor outcry nor pain be anymore.” What is promised is no less than Paradise.—
Luke 23:43.
Luke 23:43 And Jesus said unto him, “Verily I say unto thee, today shalt thou be with Me in Paradise.”
How could we be with Jesus in a paradise on earth? Jesus is in heaven.
Paradise is not on earth, it is in heaven, and we will be with Jesus in heaven, not on earth.
This is only one example of how JWs have misinterpreted one verse. There are enough of those misinterpreted verses to sink a ship.