Paul compares they faith like a tree that has deep roots or a house build on a solid foundation. Alternate Translation: "that you will be like a firmly rooted tree and a building founded upon stone". (See: [[rc://en/ta/man/translate/figs-metaphor]])
## all those set apart for God ##
It means all believers. It can be translated as "saints".
## that you may know the surpassing greatness of Christ's love ##
"that you may know Christ's love that is far above anything we can know by experience".