Hebrews 12:10 contrasts human discipline (for our temporal good) with God's discipline 'that we may share in his holiness' (hagiōtētos). This rare noun (appearing only here in the New Testament) designates God's essential sanctity—his set-apartness and moral perfection. The goal of divine discipline is conformity to God's own holy character. While 'hagiōsynē' (another holiness word) appears elsewhere, 'hagiōtēs' carries a slightly more abstract, essential quality—holiness as an inherent attribute rather than enacted sanctification.