In Giant Killers, Pastor Cathal Duffy unpacks the story of David and Goliath from 1 Samuel 17, highlighting how fear, intimidation, and psychological warfare can paralyse God’s people. While Israel trembled, David saw things differently — through God’s perspective. He declared that the battle belonged to the Lord, faced Goliath with courage, and fought not with worldly weapons but clothed in God’s strength.

Drawing on Ephesians 6 and Romans 8, Cathal challenges believers to renew their thinking, speak words of faith, and recognise that our real battles are spiritual, not just physical. David’s victory foreshadows Jesus’ ultimate triumph on the cross, reminding us that in Him, every giant can fall. This sermon encourages believers to see, hear, speak, and fight differently — with confidence in God’s authority and victory.