Vis-a-vis Jesus and fear/anxiety.
We need to be very careful here. While not one of the more well known of the ancient heresies, the heresy of Julianism, more technically known as Aphartodocetism, associated with Julian of Halicarnassus was nevertheless a serious heresy of the ancient period, and represents a continued danger to orthodox Christology.
According to Julian of Halicarnassus Christ only seemed, or appeared to be able to suffer; but that in reality His body was thoroughly incorruptible and impassible even before the resurrection. So Christ did not fully participate in our weakness, our mortality, our sufferings--but only in some sense appeared to do so.
Thus Christ's passions, including His anxiety in the garden, or even His weeping over the death of Lazarus are only "apparent", but not actually real.
This should be obvious as to why it is a problem, as it undermines the full and complete humanity of Jesus Christ.
This is why the definition of Chalcedon's language "like us in all ways but without sin" is such an important and good way of putting it. Jesus was human, in every single way that you and I are human, the only difference between Him and us is that He was without sin. That's the only difference. He still experienced pain, He was still mortal, He was still capable of suffering, of experiencing emotion, fear, anxiety, joy, sadness. He could still sneeze, or stub His toe, or drool when He slept, have bad breath.
He was really really human. Not just mostly human, or human-like. But a man, in all ways an ordinary man but without sin; while at the same time being true and very and eternal God.
As crude as it may sound to say it, but yes God farted. God became man, that's our salvation.
The paradox of the Incarnation shouldn't cause us to flee, but rather we should embrace it, it is the mystery of our religion as Paul calls it (1 Timothy 3:16).
-CryptoLutheran