Do individual souls lose their individuality upon returning to Source?

John 10

26 But ye believe not, because ye are not of my sheep, as I said unto you.

27 My sheep hear my voice, and I know them, and they follow me:

28 And I give unto them eternal life; and they shall never perish, neither shall any man pluck them out of my hand.

29 My Father, which gave them me, is greater than all; and no man is able to pluck them out of my Father's hand.

30 I and my Father are one.