Either Moses and Miriam were really talented song writers, or God gave them the song on the spot, or there was a bit of time between the victory over the Egyptians and the singing of the song.
At any rate, it’s a wonderful song about who God is.
He’s the victor.
The horse and its rider he has hurled into the sea. (Exodus 15:1)
When the enemy came in to destroy and take captive, God stepped in and won the victory for the Israelites.
Satan, like the Egyptians, came to steal, kill, and destroy.
But as it says in Colossians 2:15,
having disarmed the powers and authorities, [Jesus] made a public spectacle of them, triumphing over them by the cross.
And as Moses said again,
Your right hand, O Lord, shattered the enemy. (Exodus 15:6)
He is our strength.
When we were weak, powerless, unable to help ourselves, he stepped in with power to help us in our time of need.
As it says in Romans 5:6,
at just the right time, when we were still powerless, Christ died for the ungodly.
We were unable to save ourselves from our sin.
But just as God stepped in to save the Israelites from the Egyptians, he stepped in to save us from our sin by sending Jesus on the cross.
And now during our times of weakness when the enemy is closing in, he is the one that gives us the strength to stand.
He is our song. He is our joy.
In our times of trouble, he gives us the ability to sing as we put our trust in him.
And in times of deliverance, we are able to look back and rejoice in his love and faithfulness.
He is our salvation.
In his love and grace, he delivered us from sin and death.
Not only that, he also delivers us from our enemies, from our fears, and from the trials we face in life.
He is our leader.
He redeemed the Israelites out of the land of Egypt, and with unfailing love, led them to the promised land.
And now he has redeemed us with the blood of Jesus.
He continues to lead us in his unfailing love, and in his strength, he will guide us along this path of life until we reach his dwelling place someday.
As Moses said,
Who among the gods is like you, O Lord?
Who is like you—
majestic in holiness,
awesome in glory,
working wonders? (Exodus 15:11)
It’s amazing that the Israelites could so quickly forget these things in their journey through the desert. But then again, so do we.
As we walk through the deserts in our lives, let this song never be far from our lips.
And let us never forget just who God is.
Moment to Moment (Bible blog) 