We begin with an understanding of the word cursed because for each person reading this there is a different understanding. On the one hand it could be an active verb, indicating that some person is placing a curse on someone else. Keep in mind there are still cultures that believe that certain persons within the culture have the ability to curse others with calamity.
On the other hand, it could be a passive verb, indicating that someone is unlucky or a constant failure. Everything he or she attempts is doomed or ill-fated from the start.
What is it that Jeremiah means, then, when he declares that cursed is the one who trusts in human beings? Our Lord has no malice in His heart. He is not mean-spirited, one who would place a curse on someone, so the first meaning is out. The second meaning is more appropriate when one realizes that God is in charge… of everything. Our efforts without Him are cursed.
Let’s apply this to a modern day topic, like climate change. Here is a topic that has become so politicized that we can’t see the forest for the trees. 🙂 I am sure that each person who reads this will have a spike in blood pressure because of their feelings on the subject. One extreme is that it is completely our fault. We are to blame because of all the pollutants we put in the air and water. The other side wants to claim that it is merely the normal cycle of change that has been occurring for thousands and thousands of years. What we don’t hear is any mention of God—the One who created the earth and all of its attributes and mechanisms. He set it in motion He is the Lord of the Universe and of all Creation. Until we learn to examine the problem based on how much damage we have done and how much is God’s loving creativity, we are cursed. We go nowhere.
This may be a poor example but it is a way of showing that only when I believe, hope and trust in God, put Him first and seek His guidance, can I be truly Blessed.