1 Timothy 6:19

19 In this way they will lay up treasure for themselves as a firm foundation for the coming age, so that they may take hold of the life that is truly life.

Read 1 Timothy 6:19 Using Other Translations

Laying up in store for themselves a good foundation against the time to come, that they may lay hold on eternal life.
thus storing up treasure for themselves as a good foundation for the future, so that they may take hold of that which is truly life.
By doing this they will be storing up their treasure as a good foundation for the future so that they may experience true life.