Remember the Acts of God 谨记神的作为

God cut off the flowing of the Jordan river  and let the Israelites cross the river on dry land. But how would the future generation know about the acts of God? God instructed Joshua to bring stones from Jordan river and to stack up at Gilgal as a memorial.  Today, how does God remind us of His acts? 神截断约旦河水，让以色列民走干地过河。但是，后人如何能记得神所做的呢？神命令约书亚立石柱，纪念神所做的。今天，神如何提醒我们祂的作为呢？