These verses discuss that other things God does for us besides offering wisdom, knowledge and understanding (:6). Using military terminology, the focus seems to be on His power to defend and protect His people (“shield,” “guards,” “protects”). But beyond His absolute power to defend and protect us – and mentioned first first in these verses – He also goes on the offensive and wins “victory” for His people.
These verses note who His people are – “the upright,” “those whose walk is blameless,” “just” and “His faithful ones.” Yet, just to be clear, these are not perfect people. They are simply those who make the effort to be Honest, Open and Willing (HOW) every day of their lives.
Whatever battles we have to fight, God can handle it for us. He protects us in all we go through and will ultimately, and always, win the victory we need. Although, admittedly, it might not always be exactly what we want!