In bringing many sons to glory, it was fitting for God, for whom and through whom all things exist, to make the author of their salvation perfect through suffering.
KJV
For it became him, for whom [are] all things, and by whom [are] all things, in bringing many sons unto glory, to make the captain of their salvation perfect through sufferings.
ASV
For it became him, for whom are all things, and through whom are all things, in bringing many sons unto glory, to make the author of their salvation perfect through sufferings.