'Generation' in the Bible

‘Not one of these men, this evil generation, shall see the good land which I swore (solemnly promised) to give to your fathers,

Now thirty-eight years passed from the time we left Kadesh-barnea until we crossed the Zered Valley, until that entire generation of the men of war had died from within the camp, just as the Lord had sworn to them.

A person of illegitimate birth shall not enter the assembly of the Lord; none of his descendants, even to the tenth generation.

An Ammonite or Moabite shall not enter the assembly of the Lord; none of their descendants, even to the tenth generation, shall ever enter the assembly of the Lord,

Their children of the third generation who are born to them may enter the assembly of the Lord.

Now the next generation, your children who come after you and the foreigner who comes from a distant land, when they see the plagues of this land and the diseases with which the Lord has afflicted it, will say,

“They (Israel) have acted corruptly toward Him.They are not His children, because of their [moral] defect;But are a perverse and crooked generation.

“Then He said, ‘I will hide My face from them,I will see what their end shall be;For they are a perverse generation,Sons in whom there is no faithfulness.