Hebrews 11:40

40 since God had planned something better for us so that only together with us would they be made perfect.

Read Hebrews 11:40 Using Other Translations

God having provided some better thing for us, that they without us should not be made perfect.
since God had provided something better for us, that apart from us they should not be made perfect.
For God had something better in mind for us, so that they would not reach perfection without us.