Hebrews 2:10
10For it became him, for whom are all things and through whom are all things, in bringing many children to glory, to make the author of their salvation perfect through sufferings.
Wesley: It became him—it was suitable to all his attributes, justice, goodness, and wisdom. For whom—as their ultimate end—and by whom—as their first cause—are all things. In bringing many children to glory—to perfect the captain of their salvation through sufferings. Captain: prince, leader, and author. Perfect/consummate: bring him to a full and glorious end of all his troubles. What is said of our Lord’s being made perfect through sufferings has no relation to our being saved or sanctified by sufferings as atonement; his atonement and his Spirit carrying on faith’s work alone can sanctify us.
Agreed on both sides: the pioneer is perfected through suffering; many sons are brought to glory. Arminians gladly confess the fittingness of the Father’s plan without making our pains a second sacrifice.
Calvin: that Christ’s humiliation appear glorious to the godly. The best cause is God’s good pleasure—for whom and by whom are all things. It was necessary that Christ, as the first-begotten, should by the cross be inaugurated into his supremacy, since that is the common lot of all; this is the conforming of the head with the members (Rom 8:29). By sorrows the faithful are sanctified for glory as Christ himself was—so they may kiss the cross rather than dread it. τελειῶσαι: consecrated/perfected as captain.
The King who governs fits the Captain to the many sons by the same cruciform path he has decreed for his family—head and members.