“No weapon that is formed against thee shall prosper; and every tongue that shall rise against thee in judgment thou shalt condemn. – Isaiah 54:17

“No weapon that is formed against thee shall prosper.” “Fear not them that kill the body, and afterward have no more that they can do, but fear Him who can destroy both body and soul in hell.” Why should you fear? God is on your side. Remember, Christ has said, “Rejoice, and be exceeding glad when they say all manner of evil against you falsely for My name’s sake; for so persecuted they the prophets which were before you. Rejoice, and leap for joy, for great shall be your reward in heaven.” Hold on, young man; hold on, young woman; still continue in the fear of God, and you shall find that persecution shall work for your good. But mark thee, persecutor, there is a chain in hell of hot iron that shall be bound around thy waist; there are fiends that have whips of fire, and they shall scourge thy soul throughout eternity, because thou darest to put a stumbling-block in the way of God’s children. Remember what Scripture saith: “Whosoever shall offend one of these little ones, it were better for him that a millstone were hanged about his neck, and that he were cast into the sea.”

“Every tongue that shall rise against thee in judgment thou shalt condemn.” Here is a protection from the tongue of men. Satan leaves no stone unturned against the church of God. He uses not simply the hand, but, what is oftener a harder weapon, the tongue. We can bear a blow sometimes, but we can not endure an insult. There is great power in the tongue. We can rise from a blow which laid us low on the ground; but we can not so easily recover from slander that lays the character low.

“No weapon hath prospered, the foe is o’ercome;
No tongue hath succeeded, the wise ones are dumb;
The Lord is our glory, and each of the host
Shall yet shout hosannah on Canaan’s fair coast.”

Glory to the Father, Son, and Holy Ghost, world without end. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2908.cfm