Romans 15:13 May the God of hope fill you with all joy and peace in believing, so that by the power of the Holy Spirit you may abound in hope.
In the 1950s, a Harvard psychologist named Dr. Curt Richter conducted a now-famous experiment involving rats and buckets of water. At first glance, it was a grim study, but a profound truth about the human spirit was buried within it.
In his initial test, Richter placed rats in water to see how long they could swim before giving up. On average, they lasted just 15 minutes before succumbing to exhaustion. But then something remarkable happened, he added the possibility of hope to see the results.
Just before the rats were about to drown, Richter would reach in, pull them out, dry them off, let them rest, and then return them to the water.
And this time?
They didn’t just swim another 15 minutes.
They lasted hours with one rat that continued to swim for an astonishing 60 hours.
What changed? Richter concluded “the rats quickly learn that the situation is not actually hopeless” and that “after elimination of hopelessness the rats do not die.”
Because they had been rescued once, the rats now believed they might be rescued again—and that hope gave them the strength to endure far beyond what they were capable of before.
Let that settle in your heart for a moment: hope kept them swimming.
If hope can keep a tired rat going for 60 hours, imagine what hope in God can do in your life.
Difficult seasons are inevitable. But the crushing weight of hopelessness is far more dangerous than hardship itself.
Hope doesn’t deny the difficulty — it gives us strength in the middle of it. It lifts our eyes off the storm and fixes them on the Savior. And sometimes, that small flicker of hope is all we need to keep swimming.
That’s why Scripture reminds us that the God of hope is able to fill us with joy and peace as we trust in Him—so that, by the power of the Holy Spirit, we can overflow with hope even in the hardest moments.
Perhaps you feel like you’re treading water, moments from going under. Maybe someone close to you is silently struggling to stay afloat. Never underestimate the power of hope, especially the kind rooted in Yeshua (Jesus). It can carry you further than you ever imagined.
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[worthy_plugins_devotion_single_body]Elul is unlike any other month. As we mentioned yesterday, it is the 12th month on the civil calendar and the 6th on the prophetic calendar. This dual position gives Elul a unique character — it both closes a cycle and prepares for a new one. That is why the shofar sounds each day during Elul: it is a wake-up call, reminding us to reflect, repent, and return to the Lord before the great and awesome days of the Fall Feasts.
This begins a very special season on God’s calendar — the month of preparation before the Fall Feasts. The month of Elul is unique: it is the 12th month on the civil calendar and the 6th month on the prophetic/biblical calendar. Each day of Elul is marked by the blowing of the shofar, a trumpet call that awakens the soul. These daily blasts prepare our hearts for Yom Teruah (the Feast of Trumpets, Rosh Hashanah) and ultimately for Yom Kippur (the Day of Atonement).
We have come to the final meditation in this journey through the Z’roah, the Arm of the LORD. From the Arm that redeemed Israel out of Egypt, to the Arm that pierced the dragon, to the Arm that is coming with reward — all of these revelations lead us here: the Arm that brings His people into rest.
Isaiah’s vision looks ahead — not only to the Arm of the LORD revealed in the Exodus or even in the cross, but to the day when that same Arm will come again in glory. This is not a picture of brute force but of purposeful arrival. The Z’roah — the Arm of the LORD — comes clothed with strength to establish His rule, and He does not come empty-handed. His reward is with Him, and His work is before Him. The promise is sure: He is coming, and He is rewarding.
Isaiah recalls the Exodus as the supreme display of God’s Z’roah, His Arm of glory. Though the people saw Moses raise his staff over the Red Sea, it was not Moses’ power that split the waters. Behind the prophet’s hand was the Arm of the LORD — majestic, glorious, and unstoppable. The sea parted not to honor Moses, but to exalt the Name of the God who sent him. The Red Sea became a stage for God to reveal His glory, so that His Name would echo through generations as the Deliverer of His people.
Jeremiah uttered these words when everything around him looked hopeless. Babylon’s armies surrounded Jerusalem, the city was on the brink of destruction, and yet God told Jeremiah to buy a field as a prophetic sign that restoration would come. The prophet responded in awe: the God who created the heavens and the earth by His outstretched arm (bizroa netuyah) is not bound by human circumstances. The same God who set galaxies in place and boundaries for the seas is the God who still moves to redeem His people. Truly, nothing is too hard for Him.
Isaiah’s words summon one of the most dramatic images of God’s saving power: the Z’roah — the Arm of the LORD — cutting Rahab in pieces and piercing the dragon.
Here, Rahab is not the woman of Jericho but a poetic name for Egypt (Psalm 87:4), often symbolizing arrogant nations and the dark spiritual powers behind them. In Hebrew poetry, Rahab also evokes the sea monster of chaos, a stand-in for the forces that oppose God’s order. To say the Arm “cut Rahab in pieces” is to recall how God shattered Egypt’s pride and broke the grip of the powers that enslaved His people.