And their eyes were opened - Immediately. That is, their sight was restored: “And Jesus straitly charged them.” He enjoined it on them in the most earnest and solemn manner.
See that no man know it - That is, do not make proclamation of this; do not make it your business to tell every man of it; do not go forth as if I wished that you should proclaim this abroad. The injunction could not mean that they should screen the fact that no one “should” know it, for there were witnesses of it, and it would be made known; but they were not to make it a point to proclaim to the world what was done to them. This was in accordance with the usual habit of the Saviour Matthew 8:4; Matthew 12:16, and also with his own precepts to others Matthew 6:1-4.