The battle against all God’s opponents demands continuous attention from this Man of war (the Lord’s designation in Exodus 15:3 and Isaiah 42:13). There is then no time for a long pause, so therefore the psalmist indicates a quick sip from the brook and then on the way again. However, this battle leads to victory.
The victory is absolutely certain. The victory is for the Lord and his anointed. We may know that, and as we travel through life, it may encourage us, to keep up the fight against our sworn enemies – the devil, the world, and our own flesh
(Heidelberg Catechism, Q/A 127).
We cannot do this with our own strength. That is why answer 127 of the Heidelberg Catechism ends with this prayer, Will you, therefore, uphold and strengthen us by the power of your Holy Spirit, so that in this spiritual war we may not go down to defeat, by always firmly resist our enemies, until we finally obtain the complete victory.
Let us especially not forget that we have a great high priest who has passed through the heavens, Jesus, the Son of God
(Hebrews 4:14). He is seated at the right hand of the Almighty God and through him we can draw near to the throne of grace, that we may receive mercy and find grace to help in time of need
(Hebrews 4:16).
7 He will drink from the brook by the way; therefore he will lift up his head.