Likewise, we do not even know our own names. In Revelation we are told that we will receive a stone with a name on it that no one knows. (Revelation 2:17) This is our true name but we don't know it until we receive it from God..
Barclay says that one of the privileges of a Christian is to know the voice of God (by whatever name.) He is drawing on images from the Gospel of John where Jesus says that he is the shepherd and his sheep know his voice and will follow no other. (John 10:1-6)
If we listen to the voice of God we will sometimes be told things we do not want to hear, be shown things we don't want to see and be asked to do things we don't want to do. If we do these things, there is no guarantee that we will be safe, or that everything will work out. What we are promised is that if we follow the promptings and leadings of the voice within, the voice of the Shepherd, that God will be with us, what ever might happen.
And that is the blessing of good old what's his name, God.