Habakkuk 3:13 - Matthew Poole's English Annotations on the Holy Bible

Thou wentest forth: pursuant of his metaphor, the prophet speaks of God as marching on before his people; or it may refer to the ark, a token of God's presence before the people. For the salvation; to complete the salvation begun in bringing them out of Egypt, and carrying them through the wilderness, and to be finished in settling them in Canaan. Of the people; thy chosen people, the tribes of thine inheritance. Even for salvation: it is repeated for confirmation, and to affect us with the greatness of the mercy. With thine anointed; or, for thine anointed, i.e. all Israel; or under the conduct of thine anointed, Joshua, type of the Messiah, by whose hand all these great things were done. Thou woundedst the head; gavest a deadly wound to the princes and kings of Canaan, enemies to Israel, who were cut off, and their families utterly destroyed. Out of the house; royal palaces, or ancient dwellings, and settled habitations; of which slaughter of Canaanitish kings, see Psalms 136:17-20. Of the wicked; the courts of these kings were houses of greatest wickednesses, for which they were destroyed. By discovering the foundation unto the neck: razing the foundations of their power, and destroying all from foot to head. Selah: all which is to be heeded, and well minded.