But the Scriptures must be fulfilled

Mark 14:43-52
Now the betrayer had arranged a signal with them: “The one I kiss is the man; arrest him and lead him away under guard.” Going at once to Jesus, Judas said, “Rabbi!” and kissed him.
“Am I leading a rebellion,” said Jesus, “that you have come out with swords and clubs to capture me? Every day I was with you, teaching in the temple courts, and you did not arrest me. But the Scriptures must be fulfilled.”  Then everyone deserted(廢棄的) him and fled.
Why?
Judas is the betrayer who arranged a signal with priests for it is night uneasy to identity who is Jesus.
But the Scriptures must be fulfilled, it means Jesus is the Messiah.
Everyone deserted him and fled: Disciples saw the danger and could be arrested so everyone fled away. In front of the danger most people choose save and keep their life, unless he know what he is doing and devote his life.
Jesus knew why he is coming and his mission, so he faced the danger and accept it, he dovoted his life for all of us.
So will My word be which goes forth from My mouth; It will not return to Me empty, Without accomplishing what I desire, And without succeeding in the matter for which I sent it. (Isa 55:8-11)
How?
Apprieciated the Lord Jesus Christ, who devoted his life for our salvation.