Just two quick examples (with "them" and "word") indicating the weakness of an argument presented in a post above.
Note the word "them" in verse 31 (I have included the three preceding verses for context) of 2 Samuel 22:28-31 [KJV] --
And the afflicted people thou wilt save: but thine eyes are upon the haughty, that thou mayest bring them down.
For thou art my lamp, O LORD: and the LORD will lighten my darkness.
For by thee I have run through a troop: by my God have I leaped over a wall.
As for God, his way is perfect; the word of the LORD is tried: he is a buckler to all them that trust in him.
To what or whom does "them" in verse 31 refer to? Certainly, it is not "buckler". The next nearest noun is "word" or more completely
the word of the Lord. But
'a buckler to all the word of the Lord that trust in him' does not make any sense. Therefore, the next nearest noun is not necessarily the correct antecedent. A possible antecedent may be "the afflicted people" back in verse 28.
Note again the word "them" in verse 5 (I have supplied the verse before and after to show the context) of Proverbs 30:4-6 [KJV] --
Who hath ascended up into heaven, or descended? who hath gathered the wind in his fists? who hath bound the waters in a garment? who hath established all the ends of the earth? what is his name, and what is his son's name, if thou canst tell?
Every word of God is pure: he is a shield unto them that put their trust in him.
Add thou not unto his words, lest he reprove thee, and thou be found a liar.
To what or whom does "them" refer to? Obviously, it is not "shield". The next closest noun is "word" or more specifically
every word of God. But
'a shield unto every word of God that put their trust in him' does not make good sense here. Again, the next nearest noun is not necessarily the correct antecedent. Proverbs are brief, and I find no clear antecedent in the immediate context. In this case, I think an antecedent must be supplied by the reader.