In between Ephesians and Philippians we read three Psalms and one chapter of Isaiah.
Psalm 72, of Solomon. Most likely Solomon compiled Book Two of Psalms (Psalms 42-72) and composed or edited this psalm as a fitting end to the collection of mostly David’s psalms. It is a fitting conclusion, because it does not focus upon David himself, but on the coming Messiah – the King of Kings and Son of David.
Psalm 73 begins Book Three of Psalms, (Psalms 43-89) . It is of Asaph, a great singer and musician from the time of David and Solomon. He complains about the good fortune of the wicked and the misfortune of the righteous until he “went into the sanctuary of God; Then I understood their end.“
Psalm 74, of Asaph. This Psalm describes the destruction of the Temple. This Asaph may have been penned bya descendant of the earlier musician, or may be prophetic. In any case he asks God to defend His case against the evildoers.
Isaiah 8. Prophetically Assyria will invade Israel, an instrument of God to execute judgement on the unfaithful. The remedy is to fear God and Him alone.