Matthew Poole and continuators on 2 Samuel 23:7

7 But the man that shall touch them, must be fenced with iron, and the staff of a spear , and they shall be utterly burnt with fire in the same place z.

So the meaning is, He must fill his Hand, or Arm himself with some Iron Weapon, whereby he may cut them down; or, with the staff of a spear, or some such like thing, whereby he may thrust them away from himself, that they do him no hurt. Or thus, he will be filled, or will fill himself; i. e. his Hand, wherewith he attempted to touch, and take them with Thorns, as with iron and the staff of a spear. i. e. He will be as surely and sorely Wounded, as if one should run the Iron head, and part of the wood of a Spear, into his Hand.

Or, therefore, because men cannot safely touch them, therefore they will burn them up. Or, or i. e. if they do not cut them down with Iron, or thrust them away with the Staff of a Spear, they will burn and consume them. 2. Or, in their place, where they grow or stand; and they will not trouble or hazard themselves to remove them. Withal, it may imply, that they shall be Destroyed, when, and where they thought themselves most secure, even in their own place. And, it may possibly intimate, That those Children of Belial, the Wick edand Unbelieving Jews, who rejected and Rebelled against the Messiah, David's Successor, and their Lawful King, should be Destroyed in their Great, and Strong, and Holy City Ierusalem, where the greatest part of that People were gathered together as fewel for the fire, and were Destroyed together by the Romans under Titus, where also their wicked Predecessors had been Destroyed by Nebuchadnezzar in former times.

Marginal references: Heb. filled.; Or, or.