I never got a straight answer from a jw on 1 Timothy 2:5 as to how Jesus was only the mediator of the 144,000 in that scriptures. It talks about prayer and even the WTS hasn't said that all people aren't supposed to pray through Christ.
*** w02 7/1 p. 8 Worship God "in Spirit" ***Is it proper to pray to Jesus’ earthly mother, Mary, or to particular "saints," asking them to intercede with God in one’s behalf? The Bible’s direct answer is: "There is only one mediator between God and mankind, himself a man, Christ Jesus."—1 Timothy 2:5.
*** w97 2/15 p. 28 Agreement Between "God’s Temple" and Idols in Greece? ***Furthermore, in a very clear way, the Scriptures rule out the idea of praying to "saints" in order for them to act as intercessors with God. In his model prayer, Jesus taught that prayers are to be addressed to the Father only, since he directed his disciples: "You must pray, then, this way: ‘Our Father in the heavens, let your name be sanctified.’" (Matthew 6:9) Jesus further stated: "I am the way and the truth and the life. No one comes to the Father except through me. If you ask anything in my name, I will do it." And the apostle Paul stated: "There is one God, and one mediator between God and men, a man, Christ Jesus."—John 14:6, 14; 1 Timothy 2:5.
*** w66 8/1 p. 465 par. 16 Baptism Shows Faith ***Of special interest to one wishing to make his dedication to God is the act of faith known as prayer. When one makes his dedication he prays to Jehovah in the name of Jesus Christ, the Son, the Mediator between God and man.
*** w57 12/15 p. 747 "Confess Your Sins" ***The overseer does not presume to take the role of God, nor to be the mediator between God and men. Rather, as a loving Christian brother, he approaches God in prayer along with the spiritually sick one, doing so through the one Mediator Christ Jesus, and faithfully pointing out Jehovah’s loving provision for forgiveness.
*** g74 1/8 p. 10 What Do You Know About Prayer? ***To be acceptable to God, prayers must be through the channel he recognizes. Jesus said: "No one comes to the Father except through me." Jesus also said prayers should be presented ‘in his name.’ (John 14:6; 16:23) Thus, our prayers should acknowledge that the value of the sacrifice of Jesus’ own human life makes it possible for us to approach God in prayer, and that there is just "one mediator between God and men, a man, Christ Jesus."—1 Tim. 2:5.
*** g70 8/22 p. 16 Searching for a Church to Satisfy Her Spiritual Needs ***"For a while I thought that the Roman Catholic Church had something to offer. But it did not take too long for me to realize that we are not to pray to lifeless idols, and that the mediator between God and men is not the pope at Rome. (1 Tim. 2:5)