Law covenant = Moses (mediator) = Israelites
New covenant = Greater Moses--Jesus (mediator) = spiritual Israelites (spirit-anointed Christians)
Supposedly, the other sheep represent the Gentiles, the nations that would bless themselves indirectly by means of Abraham's seed.
Jesus is not the Legal Mediator for those on earth. Here is something to obfuscate everyone.
*** w89 8/15 30 Questions From Readers ***
• Is Jesus the Mediator only for spirit-anointed Christians or for all mankind, since 1 Timothy 2:5, 6 speaks of him as the “mediator” who “gave himself a corresponding ransom for all”?
…To grasp what Paul is saying, we must first appreciate that the Bible sets out two destinies for faithful humans: (1) perfect life on a restored earthly paradise and (2) life in heaven for Christ’s “little flock,” numbering 144,000. (Luke 12:32; Revelation 5:10; 14:1-3) Christendom teaches that all good people go to heaven, which unscriptural position has colored the general view, so that Jesus is considered a go-between for all such people…A modern-day illustration may help to clarify this, especially if you are not a spirit-anointed Christian. Think of a legal case in which an attorney is involved. His role may be not so much that of a lawyer arguing for justice as that of one who is mediating or bringing about a legal contract acceptable to and beneficial to two parties. Of course, you are not in that legal case, so in that sense he is not serving as your attorney. Yet he may be your very close friend who in other ways gives you valuable help…
Sometimes an attorney’s work produces results that benefit many others. So it is with Jesus’ legal accomplishments as Mediator of the new covenant. It produces what the Law covenant did not, a heavenly “kingdom of priests.” (Exodus 19:6; 1 Peter 2:9) Thereafter anointed Christians in the Kingdom will work with Jesus from heaven to bring a blessing to “all nations of the earth.”—Genesis 22:18.
The people of all nations who have the hope of everlasting life on earth benefit even now from Jesus’ services. Though he is not their legal Mediator, for they are not in the new covenant, he is their means of approaching Jehovah. Christ said: “I am the way and the truth and the life. No one comes to the Father except through me.” (John 14:6) All who will gain life on earth must direct their prayers to Jehovah through Jesus. (John 14:13, 23, 24) Jesus also serves as a compassionate High Priest who is able to apply in their behalf the benefits of his sacrifice, allowing them to gain forgiveness and eventual salvation.—Acts 4:12; Hebrews 4:15…