An upbeat selection of praise songs went awry at one point during Sunday's service when a heavy music folder came crashing down on the keyboard - but still people were able to sing 'Blessed be Your Name,' a song that accepts God's strength and sovereignty in every situation.
"We all know people who have been affected for ever by what life has thrown at them," said Mick Quirk, preaching to a congregation including members of his family on a visit from the Midlands.
He talked about David, who had risen from a shepherd boy to a respected leader with the approval of King Saul, but who then had to go on the run when the king turned against him in jealousy.
Although a fugitive from Saul, David had been anointed his successor by God through the prophet Samuel. While on the run David had attracted a small army of downtrodden people, and he was living a Robin Hood-style existence. On one occasion he and his men freed a town from Philistine invaders - but Saul had got word of David's presence, and through prayer David realised that the people he had just rescued were not loyal enough to protect him from the king's murderous anger.
It was at this point of despair that his true friend, Prince Jonathan, helped him find strength in God. David could now say in a Psalm: "When my spirit grows faint within me, it is you who knows my way."
"Consider the value of encouragement," Mick said. He talked about the energy runners get from the crowd cheering them on: "The church could learn a lot from the London Marathon - nobody is talking anyone down, because everyone wants everyone to win."
"At its simplest level," he continued, "encouragement is just letting people know you appreciate them."
Sunday services are held at 6 pm in the Avenue Centre, near Tenby Library.
Please visit http://www.hesed.co.uk">www.hesed.co.uk to find out more, or telephone 01646 681805.