Out of about 8 billion people how many do you think are a few?
or is it speaking of men like Moses and Abraham?
Gen 6:8, 13 KJV - 8 But Noah found grace in the eyes of the LORD. ... 13 And God said unto Noah, The end of all flesh is come before me; for the earth is filled with violence through them; and, behold, I will destroy them with the earth.
Gen 7:1 KJV - 1 And the LORD said unto Noah, Come thou and all thy house into the ark; for thee have I seen righteous before me in this generation.
The Bible doesn’t specify the population of the earth before the flood but the percentage of people who were saved would likely be a very small number.
Jesus said some other things:
Luk 13:23-24 KJV - 23 Then said one unto him, Lord, are there few that be saved? And he said unto them, 24 Strive to enter in at the strait gate: for
many, I say unto you, will seek to enter in, and shall not be able.
1Pe 4:18 KJV - 18 And if the righteous scarcely be saved, where shall the ungodly and the sinner appear?
2Pe 2:5 KJV - 5 And spared not the old world, but saved Noah the eighth [person], a preacher of righteousness, bringing in the flood upon the world of the ungodly;
1Jo 5:21 KJV - 21 Little children, keep yourselves from idols. Amen.