Our Lord saw all of His creation suffering under death, and grieved and was sore afflicted for all of what He was seeing, past, present, and future. He partook of the human fear of death, on behalf of all, that by this He may take away all fear.
He speaks on behalf of all human nature that the day and hour of the second coming no one needs to know, even though He can and does know.
In the end, we say, "the Incarnate Word willed also to submit Himself to the measure of human nature, by being supposed to suffer what belongs to it." (St. Cyril, Sermon CXLVI on the Gospel of Luke)
Therefore, the will of Christ is the will of the Father. They are all one, just as the saints of the Church have one will with the Father through Christ by the Holy Spirit. The "oneness" of will need not be a scandal. Oneness is what we are called to through Christ. If Christ was not One, how can there be unity?
If you want a scientific examination of what this "oneness" entails, sure, we do not lose our nature, neither does Christ abolish His human nature. We say the Incarnate Logos can will humanly and can will divinely, and yet He wills both in a unified fashion in accordance with the will of the Father.
When we walks on water, He uses human feet to reveal divine powers. He did not use divinity alone, for divinity has no feet to walk on water, neither does He use humanity alone, for human flesh has can easily break the surface tension of [turbulent] waters. It is an One Incarnate Nature of Logos, and One Incarnate Will of the Logos. He humanizes the divine will that our will may be divinized. He has one will that our will may be one with God.
Therefore, it is this part we stress. People like St. Maximus the Confessor will stress the integrity of humanity and divinity, to show that if it wasn't for Christ being human, we wouldn't be saved, and so everything that is part of human nature must be preserved, except si (and indeed, we agree, for if this must be a unity, there must first be an unconfused diversity). In what we stress, we also believe it is important to protect the integrity of the human nature fully except sin, and we go further, by saying that there is a purpose, and that purpose is Oneness. Therefore we can say that Christ in His humanity did not only experience death, but through His divinity conquered death by death, and rose from the death, with His humanity. One incarnate nature, God the Logos Himself, died on the Cross and rose from the dead, destroying death.
So back to your verses. God feared that man may no longer fear. God does not reveal the second coming, that man may obtain true knowledge of righteousness, only the knowledge that we need, that suffices for our salvation and enlightenment. God wills to be under the limitations of the economy of the flesh that we may receive something divine in return in accordance with what we can handle. This is why we say Christ has one nature and one will.