'Generation' in the Bible

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

Now the time that it took for us to come from Kadesh-barnea until we crossed over the brook Zered was thirty-eight years, until all the generation of the men of war perished from within the camp, as the Lord had sworn to them.

Know therefore that the Lord your God, He is God, the faithful God, who keeps His covenant and His lovingkindness to a thousandth generation with those who love Him and keep His commandments;

No one of illegitimate birth shall enter the assembly of the Lord; none of his descendants, even to the tenth generation, shall enter the assembly of the Lord.

No Ammonite or Moabite shall enter the assembly of the Lord; none of their descendants, even to the tenth generation, shall ever enter the assembly of the Lord,

The sons of the third generation who are born to them may enter the assembly of the Lord.

“Now the generation to come, your sons who rise up after you and the foreigner who comes from a distant land, when they see the plagues of the land and the diseases with which the Lord has afflicted it, will say,

“They have acted corruptly toward Him,They are not His children, because of their 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 is no faithfulness.