By claiming that they are new every morning, the Prophet meant that God renews His Creation every day, making today different from yesterday, similar to the waters of the river that will never be the same. Innovation, novelty, is one of the characteristics of the manifestation of the Creator.
If you wish to live in harmony and integrated with God, free from the old state of ignorance that imprisons and stagnates, you must possess the divine characteristic, always renewing yourself. As is the case with the renewing sunlight, the air we breathe that is never the same, and the new opportunities and mercies of the Lord.
Nobody renews themselves by keeping the previous profile, change is to leave things old, forgetting preconceived ideas, bad feelings that cause us harm. Whoever proposes to change by renewing their life will have in their favor the Creator who makes use of the progress and improvement of all things, to perfect their creation, be it man, religion, politics, marriage, friendship, everything. needs to be perfected.
The verse of the book “Lamentations” ends by saying of “faithfulness,” after speaking of the all-renewing God each morning. This is meant to show us how much the Lord is faithful and loves us, for in His unchangeableness, everything is new to our happiness.