About Us

ABOUT US: “Our ministry is supporting your ministry“… we equip your church or para-church leaders with essential resources and tools, so that your ministry may help every member mature spiritually, and be effectively mobilized into Christ’s Kingdom service.

AssessME Client Map

Is your church on our map? Locate our thousands of U.S. client ministries. AssessME.org has clients in 36 countries.

Our Corporate Website

E-Church Essentials, LLC is the parent company of AssessME.org. Select the title to learn more.

Our specialization

  • E-Personality Assessment

    The ePersonality assessment is designed exclusively for ministry-mobilization of your church members. The assessment helps your people better understand why God made them as He did, and for what purpose.

  • GraceGifts Spiritual Gift Assessment

    GraceGifts is a classic Spiritual Gift assessment tool that filters final gift results through personality distinctives we call “Gift Expressions”.

  • Leadership Style Assessment

    The Leadership Style Assessment is designed for positioning the right people, with the right temperament and skill-set, within various leadership teams. This assessment also helps with succession-planning and leadership development program strategies.

  • Skills Tracking

    Skills tracking is a component of our ministry-mobilization program. It includes micro-resume’s for each skill category.

  • NextSteps Discipleship Program

    The NextSteps Spiritual Formation Program is more than an assessment, it enables ministry leadership to assess, track, and equip their people for spiritual maturity. This program is 100% editable…every question and every report…so that you can enable the program to better reflect your discipleship culture.

  • Made for a Mission

    Made for a Mission, authored by David A Posthuma, is intended to be the primary AssessME.org training resource for church and ministry leaders.

Meet the Team

We are a team of dedicated professionals, ready to do what ever it takes to help make your discipleship and mobilization efforts more effective.

David A Posthuma

David A Posthuma

President, Systems Designer, & Author

David A Posthuma is the author and designer of the AssessME.org programs and their related assessments. He has also authored several ministry resource books.

David graduated from Calvin College, Grand Rapids, MI; Trinity International University, Deerfield, IL; and received certifications from MacNeal Hospital, Chicago. David has planted two churches, restarted a dying Chicago church, launched a large-church college and career program, and managed a church merger. In addition, David designed the Parent Pager System and the E-Church Network.

Tamara Posthuma

Tamara Posthuma

Editor & Communications

Tamara is a graduate of Calvin College, Grand Rapids, and holds a Master’s degree in Communications from the University of South Florida. Tamara has served several Fortune 500 companies as a business curriculum developer and communications professional.

Tamara serves as the primary editor for our website content, our assessment content, and the books and magazine articles written by David A Posthuma. Tamara also serves as our voice-talent for our software video tours.

Skip Nagelvoort

Skip Nagelvoort

Sales & Marketing

Skip is a graduate of Hope College in Holland, Michigan, and the University of Michigan. Some additional educational experiences (non degree) include Investment Strategies and Theory at the Tuck School at Dartmouth University and Far East Asian business Studies at the Institute at Harvard University.

His work experience includes 30 years of time working in New York City for Faulkner, Dawkins and Sullivan. Goldman Sachs and Nagelvoort & Co. He later spent time in Athens, Georgia associated with the Center for international Trade and Security and various business interests.

James Wiersma

James Wiersma

Lead Programmer

James has partnered with E-Church Essentials, LLC and AssessME.org since 2004. James is responsible for developing all of our software systems. He is also a graduate of Calvin College, Grand Rapids, MI.

James also serves Salem Media Group’s Web Division, as their Director of Development, overseeing a team of 25+ programmers who develop and manage sites such a Christianity.com, OnePlace.com, Crosswalk.com, BibleStudyTools.com, LightSource.com, and more.