The scriptures read are Amos 2, Psalm 108 and Matthew 10.
Amos 2. The judgments continue, climaxing with God's condemnation of his own people. And again it is their mistreatment and exploitation of the poor as well as their idolatry.
Psalm 108. Here is Leonard Bernstein's exciting version of this psalm in his Chichester Psalms.
Matthew 10. Rules for disciples and apostles.