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.

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.

And being made perfect, he became the author of eternal salvation unto all them that obey him;

And having been made perfect, He became the source of eternal salvation to all who obey Him