<p>14:26- see on Jn. 17:1.</p><p><i>And when they had sung a hymn</i>- Probably the Passover hallel of Ps. 115-118. It's worth reading those Psalms imagining them on the lips of the Lord at the last supper; they are pregnant with relevance for His forthcoming death, especially the reference to &quot;I will take the cup of salvation&quot;. Heb. 2:12 surely has the scene in mind, quoting &quot;In the midst of the church will I sing praise unto You&quot; as being proof of the Lord's absolute humanity. The fact He sung praise to&nbsp;<i>God</i>&nbsp;surely reveals a human and not Divine Christ. But doing so amongst His brethren, &quot;the church&quot;, as one of them, is an essay in His unity with us, both in nature and experience.</p><p><i>They went out to the Mount of Olives</i>- The Passover ritual required that nobody should go out of the house until morning (Ex. 12:22). This is clearly teaching that the Passover deliverance had already begun, even before the Lord's blood had been shed, and would connect with the usage of present tenses concerning the Passover and shedding of the Lord's blood (see on :2,28). This sets the scene for the Lord's comment in :32 that He would go before them, and they should follow Him. He was as Moses and as the Angel which went before Israel on Passover night. The allusion to Ex. 12:22 shows that the old legislation had passed away, and in any case the type of Passover being kept by the Lord was not strictly the Mosaic one- for it's likely He was celebrating it a day earlier than stipulated. But the point perhaps was that the true Israel of God were now 'going out' from Egypt; so certain was the Lord that He would achieve deliverance that He could speak of that deliverance as already being achieved. He didn't, therefore, see His work on the cross as something which He might or might not successfully achieve- as we should, He went ahead in the certainty of ultimate success and victory.</p>