'Generations' in the Bible

These [are] their generations: the firstborn of Ishmael, Nebaioth, and Kedar, Abdeel, Mibsam,

And his kinsmen by their families, when their generations were recorded in [the] genealogy: the chief, Jeiel, and Zechariah,

The sons of Tola: Uzzi, Rephaiah, Jeriel, Jahmai, Ibsam, and Shemuel, heads of their fathers' houses; for Tola, mighty warriors of their generations, their number in the days of David [were] twenty-two thousand six hundred.

And in addition to them, according to their generations, according to the house of their fathers, [were] troops of the army for war: thirty-six thousand. For {they had} many wives and sons.

And their enrollment by genealogy according to their generations, [as] heads of the house of their fathers, mighty warriors, [was] twenty thousand two hundred.

These [were] the heads of the {families} according to their generations, chiefs. These lived in Jerusalem.

and their brethren according to their generations, nine hundred and fifty-six. All these men [were] the heads of the {families} in the house of their fathers.

Remember his covenant forever, the word he commanded for a thousand generations,

And this was a small [matter] in your eyes, O God. And you have spoken concerning the house of your servant for a long [time] and have shown me {future generations to come}, O Yahweh God.