"It's a miracle they didn't put him against the wall and shoot him right there," Mr Hamilton said.
"But when they heard his story they had some sort of compassion for him and gave him an amnesty. Then he had to go back into the jungle and rescue his woman."
He went on to become a policeman and is now a pastor.
And, now aged 50, he thanks the Lord for keeping him for all those years.
"Many of my friends, junior and senior to me, fell dead," he said.
"I shall serve the Lord with all my heart, my soul and my spirit."
Pastor Mike Shaw, who met him in Uganda and invited him to Kaikohe, said everything possible was being done to deliver a message of hope to the community by supporting Men Against Sexual Violence, It's Not OK and any other groups that would help men take responsibility for their own actions and make positive change.
"Richard's life is evidence of the life-changing power of Jesus Christ. He has gone from a trained killer to a transformed man. His story will give any man hope and the knowledge of how to make permanent, positive change." he said.
Mr Esolu will also addresses a meeting at Kaikohe's Celebration Church on Saturday and two on Sunday.