Good news to the poor and comfort for mourners form a strong Isaianic background to the opening Beatitudes, though Matthew does not quote Isaiah here.

Jesus’ promise that the meek will inherit the earth/land closely echoes Psalm 37:11 and places the Beatitude inside Israel’s wisdom promise that humble trust in God, not violent self-assertion, is the path to enduring inheritance.

The Beatitudes’ blessing of the pure in heart and promise of seeing God strongly resonates with Psalm 24’s clean-handed, pure-hearted worshiper who may ascend God’s holy place. The link joins kingdom blessedness with the older biblical pattern of holiness and access to God.

Jesus pronounces the persecuted for righteousness blessed and tells them to rejoice; Peter likewise calls those who suffer for righteousness blessed and frames faithful suffering within hope.

James’s peacemakers who sow righteousness strongly resonate with Jesus’ blessing on peacemakers and broader beatitude ethics.