| Barnes' Notes on the Bible And he charged them ... - He was "at this time" desirous of concealment. He wished to avoid their plots and to save his life.
Clarke's Commentary on the BibleCharged them that they should not make him known - See Matthew 8:4. Jesus Christ, as God, could have easily concealed himself, but he chooses to do it as man, and to use no other than human means, as these were quite sufficient for the purpose, to teach us not to neglect them in our necessity. Indeed, he always used his power less on his own account, than on that of men.
Gill's Exposition of the Entire BibleAnd charged them that they should not make him known. This charge was given, either to the multitude that followed him, and were healed by him, that when they returned to the respective places from whence they came, they would not make it known to his enemies where he was, and what he had done to them; being neither desirous of popular applause and glory, nor willing to provoke them more, nor to fall into their hands as yet; or else, as Mark seems to intimate, to the unclean spirits, that they would not declare who he was, the Son of God, they confessed him to be: and very likely it was given to both, and that they should neither tell where he was, nor who he was; and this charge was a very severe one; for the word signifies a charge with threatenings, should they not observe his orders.
Geneva Study BibleAnd charged them that they should not make him known:
People's New Testament 12:16 Charged them. Those healed. To note about his cures now would intensify the hate of his enemies.
Jamieson-Fausset-Brown Bible Commentary16. And charged them-the healed. that they should not make him known-(See on [1272]Mt 8:4).
Matthew Henry's Concise Commentary12:14-21 The Pharisees took counsel to find some accusation, that Jesus might be condemned to death. Aware of their design, as his time was not come, he retired from that place. Face does not more exactly answer to face in water, than the character of Christ drawn by the prophet, to his temper and conduct as described by the evangelists. Let us with cheerful confidence commit our souls to so kind and faithful a Friend. Far from breaking, he will strengthen the bruised reed; far from quenching the smoking flax, or wick nearly out, he will rather blow it up into a flame. Let us lay aside contentious and angry debates; let us receive one another as Christ receives us. And while encouraged by the gracious kindness of our Lord, we should pray that his Spirit may rest upon us, and make us able to copy his example. | 
