Matthew 26:54 - Ellicott's Commentary On The Whole Bible

How then shall the scriptures be fulfilled? — The words indicate what one may reverently speak of as the source of the peace and calmness which had come to our Lord’s human soul out of the depths of its agony. All that was sharpest and most bitter was part of a pre-ordained discipline. Not otherwise could the Scriptures be fulfilled, which had painted, if we may so speak, the picture of the ideal Sufferer not less vividly than that of the ideal Conqueror and King. It was meet that He too should be made perfect through sufferings (Hebrews 2:10).