In between Philippians and Colossians we read two Psalms and two chapters of Isaiah.
Psalm 79, of Asaph. A cry for help, for the heathens are devastating Jerusalem, the Temple and the people. The Psalmist confesses their collective sins and pleads for restoration, always with praise and thankfulness.
Psalm 80, of Asaph. A prayer for restoration of Israel, mentioning the Shepherd of Israel, a heartfelt and urgent plea.
Isaiah 26 is a song of praise full of Messianic prophecy. The song is full of words with double meanings, one obvious and one prophetic.
Isaiah 27 promises the deliverance of Israel.