The Elders of Berean Bible Church

Kahu Daniel Costales (Teaching Elder)

Daniel Costales was born on the island of Kauai, Hawaii, to Alice and "Pastor Timmy" Costales. His early years were spent at Anahola Baptist Church and Kauai Christian Academy on the island of Kauai. During his teen years, Daniel's parents served for five years at Koolau Baptist Church and Academy on the island of Oahu. God granted Daniel salvation at an early age and burdened him in his youth for pastoral ministry. In 1999, he earned his Master of Divinity degree from The Master's Seminary in Sun Valley, California. Four months after graduation, he was installed as the Kahu (Hawaiian for Pastor or Shepherd) of Berean Bible Church in Hilo, Hawaii.

Kahu Daniel is passionate about theology and teaching God's truth to God's people. It is his privilege to lift up the name of Jesus through the careful exposition of the Scripture at every church worship service. The church supports Kahu Daniel full time which gives him the freedom to meet for one-on-one and family counseling. Write to him at hilobereans@gmail.com to set up a private counseling session. Kahu's hobbies include playing soccer, hanging out with his family, reading Christian biographies and listening to Bible expositors on his iPod. You might catch him at odd hours picking out tunes on his guitar and serenading anyone who will listen. Add him on Facebook to keep up with his family antics.

Kahu's wife Karen is an important part of the ministry. Born in Mexico and reared in a missionary home, she was drawn to the Savior at an early age. Her desire to serve the Lord in ministry has been fulfilled at her husband's side here at Berean Bible Church. After college Karen worked as an elementary school teacher and high school Spanish teacher. In more recent years, she has dedicated her time to being a keeper at home and teaching at a local public charter school. At home between laundry loads and dinner dishes, you might find her planning Mexican food events and checking her Facebook messages. Kahu and Karen have been married since 1995 and have four children - Nancy (a.k.a. "Hoku"), Timothy James, Liana Joy and Kekoa Hudson.

Louis "Fred" Deetman (Head Elder & Treasurer)

Fred Deetman was born in The Hague, Holland, but he and his family moved back to their native country of Indonesia shortly after his birth.  With the advent of World War II, Japanese forces ravaged Indonesia while Fred was still young. Fred lost his father during the war, and the rest of the family moved often to avoid captivity. After the war, Fred's family returned to Holland where he finished school. He enrolled at the University of Rotterdam but dropped out in order to follow his girlfriend, Helen, to America. Five months later, they married. Fred went on to earn his master's degree in economics and finance at the University of Southern California. He obtained his license as an enrolled agent, and he and Helen did tax preparations at their own small business. Around this time, they found a church in Los Angeles and participated in a class where they were taught how to defend the faith. It was there that he and Helen began to truly understand the gospel. Fred was saved at this church and, through good and bad times, continued to live his life for the glory of God. After many years of preparing taxes, Fred and Helen retired to Hawaii. They have faithfully served Berean Bible Church for many years.

Earl Nakasato (Elder)

Earl Nakasato was born in Pepeekeo, Hawaii and raised in Honomu near Akaka Falls. He graduated  from Hilo High School, and served in the U.S. Army until 1963. Earl went on to attend the University of Hawaii at Hilo and later transferred to the University of Nebraska, where he earned a bachelor's degree in economics. He then completed law school and became a lawyer. In 1971, Earl married his wife, Ona. Two years later, he started working for the County of Hawaii. Around this time, he began attending Berean Bible Church and met the former pastor, Tom Kalili. Through Pastor Kalili's teaching, Earl got a deeper and more meaningful understanding of Scripture. He believes that God, by his love and grace, led him to Christ through fellowship with other people. Earl has two children and three grandchildren, all of whom live on the mainland. Earl's hobbies include reading Scripture and historical books.

Roy Cornella (Elder)

Roy Cornella was born in Batesville, Arkansas. He graduated from Arkansas Polytechnic College (now University) with a B.S. degree in chemistry before commissioning in the U.S. Air Force (USAF) in 1972. He served six years in Phoenix, Korea, England, and Las Vegas. In 1978, he transferred to the Air National Guard. Roy married Jana Fong in 1988, and they moved to Hilo in 1991, where Roy became the Commander of the 291 Combat Communications Squadron. Around the turn of the century, the Lord led Roy to begin studying the scriptures in-depth, and shortly afterwards he began searching for a church. His family began attending Berean Bible Church in 2003; he and Jana were baptized one year later. Roy retired in 2005. He and Jana are now working hard at maintaining their rural property and raising their own animals. They have three children. Aja recently earned an M.A.B.C. from The Master's University. Jake lives in Washington with his wife, Stephanie. Catherine is homeschooled and helps her parents take care of their property.

Aaron Tresham (Elder)

Aaron Tresham was born in McMinnville, Oregon. He was raised in a Christian home and placed his faith in the Lord as a child. Aaron earned a B.A. from Lewis and Clark College and an M.S. in Mathematics from the University of Oregon. At U of O he met Jennifer, who was born and raised on the Big Island, and they were married in 2004. Following graduate school, Aaron attended The Master's Seminary, while Jen taught high school math. Aaron eventually earned an M.Div., Th.M., and Th.D. in New Testament. After teaching math at Northern Arizona University for two years, the Lord opened up an opportunity to teach near Jen's family. So in 2013, Aaron and his family moved to Hawaii, where he currently teaches math at the University of Hawaii at Hilo. Aaron and Jen have two sons, Nathaniel and Matthew, who bring them a lot of joy and fatigue. 

Mark Morikawa (Elder)

Mark Morikawa was born in Honolulu, Hawaii. He heard the gospel throughout his childhood and put his faith in Christ as a teenager. Mark earned a B.A. in Communication from the University of Hawaii at Manoa in 2007. He then worked about four years as an adolescent substance abuse counselor on Oahu. In 2012, Mark started attending Berean Bible Church, while working for Goodwill's youth program in Hilo. He currently works as a Social Worker for East Hawaii Child Welfare Services. Mark's wife, Lima, was born in California and grew up primarily on Oahu. She became a Christian in 2011. Lima graduated from the University of Hawaii at Hilo in 2015 and married Mark that same year. She currently works in Suisan's human resources department. Mark and Lima are expecting their first child in December 2017.