'Generations' in the Bible

So all the generations from Abraham to David were 14 generations; and from David until the exile to Babylon, 14 generations; and from the exile to Babylon until the Messiah, 14 generations.

because He has looked with favoron the humble condition of His slave.Surely, from now on all generationswill call me blessed,

In past generations He allowed all the nations to go their own way,

This was not made known to people in other generations as it is now revealed to His holy apostles and prophets by the Spirit:

to Him be glory in the church and in Christ Jesus to all generations, forever and ever. Amen.

the mystery hidden for ages and generations but now revealed to His saints.