Psalm 102 says it this way.
18 Let this be written for a future generation, that a people not yet created may praise the LORD:
Verse 24 says that He goes on through all generations.
The verses following that tell how God created the heavens and the earth, that they will pass away but how He remains the same and will never end. then again the coming generations are mentioned.
28 The children of your servants will live in your presence; their descendants will be established before you.”
What are you doing to make sure that your children and grandchildren know the LORD? Do you tell them the great things He has done in your life? Are you teaching them to love Him and follow Him? If you don't....who will?
Set up some rocks so you can tell your children and grand children how great the LORD is!