Speaking in righteousness, mighty to save.

Isaiah 63:1-19
Who is this coming from Edom, from Bozrah. with his garments staied crimson? robed inplender..?
It is I,speaking in righteousness, mighty to save.
The red garments is the Lords anger, in his wrath, made them drunk and poured their blood on the ground. Their blood spattered God's graments.
In all their stress God too was distressed, and the angel of his presence saved them.
Why?
Edom with its captal, Brozrah, represents all the enemies of God's people.
This is an appalling(awful) picture; but until the enemy is defeated, God's people cannot be set free.
The prophet's prayer is very like a psalm. Recalling all God's past goodess and faithfulness, his acts of power in the days of Moses, leads to an impassioned appeal.
It is the Lord who is mighty to save with love and compassion. He is righteous so His wrath made his rebelled people and enemies drunk.
How?
Even God's anger is with his love and grief. The Lord hopes people return to Him. Love people for the Lord has loved me.