Hebrews
Hebrews is a sustained sermon, anonymous and eloquent, written to believers tempted to drift back from Christ into safer, older loyalties. Its answer is a single word sounded in every key: better. The Son is better than angels, better than Moses; his priesthood, in the mysterious order of Melchizedek, is better than Aaron's; his once-for-all sacrifice ends the endless repetition of the altar. Warnings of fearful seriousness alternate with encouragements of great tenderness. The eleventh chapter unrolls the roll call of faith, and the whole letter drives toward one exhortation: run with endurance, looking to Jesus.
Anonymous; associated with Paul's circle, its author unknown since antiquity
AD 60–90, likely before the temple's destruction
Jewish Christians tempted to drift from Christ under pressure
To warn against drifting away by showing Christ's absolute superiority as Son, high priest, and final sacrifice.