Final answer:
The assembly will know that the Lord does not save by physical might or weaponry, but through spiritual principles such as faith and righteousness.
Step-by-step explanation:
The question appears to be religious or theological in nature, referring to what the assembly will know about the ways in which the Lord saves. In various religious texts, it is often expressed that the Lord does not save by sword or spear; instead, it is faith, righteousness, or other spiritual principles that are emphasized as the means of salvation. This idea is conveyed to illustrate that the strength of the spirit is greater than physical might and that divine intervention is not dependent on human force or weaponry.