When Twaloot set forth with the armies, he said: “Indeed, Lord Allah will test you with a river, then anyone drinks from it, then he will not be with me; while anyone who doesn’t taste he is with me, except the one who scoops up only a palm-full in his hand”, yet they all drank from it except a few among them. When he and those who believed with him crossed over, they said: “We have no strength today to encounter Jalooth (Goliath) and his army”! Those who were thinking that indeed they will meet Allah said: “How many small troops have vanquished great troops with Allah’s Permission? And Allah is with those who are having patience”.
The Twaloot and army had to cross the Jordan river to fight Goliath and his army. Twaloot warned his army about the trial of the Lord that nobody should drink from the river even if they are very thirsty on that hot day. After crossing the river, most of those who drank said that they had no strength to face Goliath’s army. So Lord consoled the few believers who obeyed Lord and Twaloot in that trial: “How many of small troops have vanquished great troops with Allah’s Permission? And Allah is with those who are having patience”. Similar events took place during Messenger Muhammad’s time also. It is asked through verses 29: 2-4: “Do mankind reckon that they will be left free without being tested by saying: "We believe"? And surely We have tested those before them, and Lord Allah will surely know those who are truthful and who are liars. Or do those who do evil deeds reckon that they can pass Us? What an evil judgment they are taking”.
Today, as Adhikr is codified as the Splendid Book, whoever holdfasts It, he did holdfast Lord and is guided into the Straightpath. Verse 8: 66 also ends as: “And Allah is with those who are having patience”. See explanation 2: 134 and 155-157.