'Numerous' in the Bible

Under utterly hopeless circumstances he hopefully believed, so that he might become the forefather of many nations, in agreement with the words "Equally numerous shall your posterity be."

Isaiah also calls out concerning Israel, "Although the descendants of Israel are as numerous as the grains of sand on the seashore, only a few will be saved.

so we, who are many, are [nevertheless just] one body in Christ, and individually [we are] parts one of another [mutually dependent on each other].