Isaiah 41:3

He pursued them, and passed safely; even by the way that he had not gone with his feet.

He pursued them, and passed safely..... Went on in his work, pursued his great design in subduing the souls of men, and bringing them to the obedience of Christ; and though he had so many enemies, he "passed on safely"; God did not suffer them to set upon him, to do him any harm, even though he was exposed to perils by sea and land, by thieves and robbers, by his own countrymen and Heathens, in city and country, and even by false brethren; see Acts 18:10, it is in the future tense, "he shall pursue them, he shall pass safely" {i}; or in peace:

even by the way that he had not gone with his feet; travelling in foreign parts, in distant countries, in tracks of land unknown unto him; where he had never been before, even from Jerusalem round about to Illyricum, fully preaching the Gospel of Christ, Romans 15:19.

{i} Mpdry "persequetur", V. L. Pagninus, Montanus; "transibit", V. L. Pagninus, Montanus.