John Wesley on Joshua 5:5

Them - Either their parents, or the rulers of Israel, by Divine permission and indulgence; because they were now on a journey, in which case the passover also might be neglected, Numb 9:10,13. Rather, it was a continued token of God's displeasure against them, for their unbelief and murmuring: a token that they should never have the benefit of that promise, whereof circumcision was the seal.