Let's first go back to: "My sheep hear my voice."
Christ said to Nicodemus that one must be born again to see the kingdom of God. Then he said to Nicodemus that he should not marvel at this. Christians therefore hear Christ when he says they must be born again, but that does not mean Christians fully understand how God admisisters His grace to save people.
Now, concerning the Trinity debate; for you to quote that verse and conclude that Trinitarians do not hear the voice of Christ is false on two accounts:
1) The account of God.
2) Your own accout
Concerning 1) Since you love to quote the John 5 verse so much, I will use this to say the following:
Whether Christ has two natures or not, Trinitarians believe that Christ was speaking in his human nature in John 5:19-29. Unitarians also believe Christ was speaking in his human nature in those verses, because Unitarians believe Christ has only a human nature. The conclusion is that both hear the voice of Christ in that verse.
Concerning 2) My "attacks" on you, I suppose, is when I quote your contradictory ways. You first say that you are not judging Trinitarians, then you go right ahead and judge them by implying they do not hear the voice of Christ. To imply such a thing is to imply one is not saved; for how can one be saved unless they hear the voice of Christ?
Responding to me being "lukewarm": To be lukewarm does not mean to not understand something in God's word and therefore not take a firm stance. Take for example the issue of predestination. The bible clearly teaches it, but its how God predestines that's being debated. In Romans 9:22, Paul speculates an argument concerning the way God predestines by starting off saying, "What if......" Are you going to say Paul is being lukewarm because of his speculation? Why not tell Paul to take a "firm stance" ?
The fact that I say Unitarianism has a better argument should show you that there are still some Trinitarian arguments in which Unitarians only speculate against. So according to you, Unitarians are being lukewarm because they are not able to cast down ALL Trinitarian arguments. Rather, they are able to cast down some, or even most, but the rest are speculated against. In other words, you are basically telling me to guess my position in taking a firm stance because I am still willing to claim ignorance concerning fully grasping the nature of God. An attempt to influence one to guess their position by calling them lukewarm is one in which God will hold you accountable for, unless you repent.
Now, my whole reasoning in being involved in this thread is just to point out that you are judging (or condemning) Trinitarians, when you said in a previous thread that you will not do such a thing.