He turned the sea into dry land: they went through the flood on foot: there did we rejoice in him.
He turned the sea into dry land - both the waters of the Red Sea and those of the Jordan. This drying up of seas of obstacles which oppose His people's course is continually being acted over again, and will be so especially at the final deliverance of Israel. The drying up of the Red Sea again is expressly foretold in the case of Israel's restoration (Isaiah 11:11; Isaiah 11:15). So also in the case of all His elect (Isaiah 43:2).
They went through the flood on foot - Hebrew, 'they go,' etc. This shows that the deliverance at the Red Sea is virtually repeated from age to age in behalf of the Church.
There did we rejoice in him - Hebrew, 'will we rejoice,' etc. Past deliverances are pledges of those to come: so that the latter are described in figures borrowed from the former (Zechariah 10:11). The Euphrates in Isaiah 11:1-16 and the Nile in Zechariah 10:1-12 are substituted for the little Jordan, to show that the deliverance at the Jordan is to be repeated on a larger scale.