Whence comest thou?] This question is asked for our infirmity: for God knew whence he came. From going to and fro in the earth] 1 Peter 5:8. Herein is described the nature of Satan, who is ever ranging for his prey, as one unquiet, seeking alwayes to do mischief, Matthew 12:43. from walking up and down in it] He sets a good face on it, as if the earth were the place of his delight, and full liberty, which is the place of his banishment and restraint, till he receive his lasting damnation, Luke 10:18. Revelation 12:12. John 14:30.