Daniel 12:10

The -time of the end" characterized: it will be an age of trial and probation, in which many will come out purified and ennobled, while others will only have their wickedness confirmed.

Many shall cleanse themselves, and make themselves white, and be refined] by their sufferings, and their constancy under temptation, their characters will be ennobled and refined (cf. Daniel 11:35). The two reflexives are not to be pressed unduly; but they imply that the martyrs, by their deliberate acceptance of suffering, are, to a certain degree, the agents in the purification of their characters.

but the wicked shall do wickedly The trial will have no effect upon them, beyond giving them further opportunities of doing wickedly, and so confirming them in their wickedness.

none of the wicked shall understandi.e. act with understanding but they that be wise shall understand shall act with understanding. The wicked act blindly, not perceiving the consequences of their wickedness; the -wise," the religious teachers of the nation (the same word as in Daniel 12:3; Daniel 11:33; Daniel 11:35), shew insight into the ways and providence of God. For -understand," cf. Psalms 49:20; Psalms 82:5; Hosea 4:14.