“Therefore when Jesus perceived that they were about to come and take Him by force to make Him king, He departed again to the mountain by Himself alone” (John 6:15 NKJV).

After Jesus had miraculously fed the multitude, He “perceived” that the crowd had it in their minds to make Him king. So, He went into the mountain alone, staying there until nightfall. Jesus would not allow the people to determine His identity and purpose. The Father had not sent Him to be a temporal king, but a Lamb of God, taking away the sins of the world. He was establishing an eternal kingdom.
We do not get to make of Jesus what we will. He will not allow it. We must receive Him for who He claims to be. Then, willing submit to Him, asking Him to make of us what He wills.