'Wanders' in the Bible

For forty years I loathed [that] generation, and said, '[They are] a people [whose] heart wanders. And my ways they do not know.'

Whoever wanders from the way of understanding, in the assembly of the dead he will rest.

What do you think? If {a certain man has} a hundred sheep, and one of them wanders away, will he not leave the ninety-nine on the hills and go [and] look for the one that wandered away?