Charles H. Spurgeon on Psalms 107:16

For he hath broken the gates of brass, and cut the bars of Zion in sunder. This verse belongs to that which precedes it, and Sums up the mercy experienced by captives. The Lord breaks the strongest gates and bars when the time comes to set free his prisoners: and spiritually the Lord Jesus has broken the most powerful of spiritual bonds and made us free indeed. Brass and iron are as tow before the flame of Jesus' love. The gates of hell shall not prevail against us, neither shall the bars of the grave detain us. Those of us who have experienced his redeeming power must and will praise the Lord for the wonders of his grace displayed on our behalf.