Yes, Alan is correct. The name Jehovah's witnesses (sic) was picked by Rutherford in 1931. The night before he announced it, he was reading the 62nd chapter of Isaiah and had a "revelation" when he got to the second verse, which states, "...and thou shall be called by a new name, which the mouth of the LORD shall name." - NIV.
Apparently, Rutherford passed out before he read any further in that chapter. The next day, he read that verse and announce that that "new name" declared by Jehovah would be Jehovah's witnesses.
Had he not passed out and got to verse four that same chapter, he would have discovered this:
"Thou shalt no more be termed Forsaken; neither shall they land any more be termed Desolate: but thou shall be called Hephzi-bah, and thy land Beulah: for the LORD delighted in thee, and thy land shall be married" - Isa 62:4
So if verse 2 applies to dubs, then verse 4 must also apply to dubs. They should be calling themselves "Hephzibah's Witlesses."
Now, the NTW apparently translated Hephzibah into its meaning: "My Delight is in Her." That being the case, dubs should be knocking on doors and saying, "Hello, we are with a group called 'My Delight is in Her.' Would you like to buy a nice book?"
Farkel