Did you notice in the OT for Saturday of Easter 7

Numbers 21:4-9 never says that God removed the serpents after He forgave the repentant people. That's what the people pray for in verse 7. But verse 9 implies that the biting of serpents is an ongoing thing, even after the bronze serpent is constructed. However, the text does say God provided salvation and healing for the people. In the same way, God leaves us in the midst of many of our problems here in this life - and yet His salvation and healing in the midst of them is just as true and real as it was for Israel in those days. (As for the symbolism of the serpent on the pole, I'll let Jesus explain that to you in John 3:14-15).