Mark Drost

Operates as a 'self-employed' itinerant evangelist within the UPCI and WPF — both Oneness Pentecostal organizations that deny the foundational Christian doctrine of the Trinity. While he has denominational credentials within these networks, the UPCI and WPF themselves stand outside historic Christian orthodoxy as defined by the Nicene Creed (325 AD), the Athanasian Creed, and every major branch of Christianity. His authority derives from organizations that teach heresy. A shepherd who leads the flock away from the triune God revealed in Scripture — regardless of his sincerity — is a false teacher. 'For if someone comes to you and preaches a Jesus other than the Jesus we preached... you put up with it easily enough' (2 Corinthians 11:4).

Oneness Pentecostalism teaches a fundamentally different gospel: repentance + water baptism in Jesus' name + speaking in tongues = salvation. This is a works-based soteriology that adds human requirements to the finished work of Christ. Scripture is clear: 'For it is by grace you have been saved, through faith — and this is not from yourselves, it is the gift of God — not by works, so that no one can boast' (Ephesians 2:8-9). Paul asks rhetorically, 'Do all speak in tongues?' (1 Corinthians 12:30) — the implied answer is no. Making tongues a requirement for salvation contradicts Paul's own teaching. Furthermore, 'SPEAK YOUR WAY OUT OF YOUR PROBLEMS' represents Word of Faith positive confession theology — the belief that spoken words have creative power to change reality — which has no biblical basis and originates in New Thought metaphysics, not Scripture.

No personal scandals, moral failures, or financial exploitation were found in the research. He comes from a deeply committed ministry family and appears genuinely devoted to evangelism. However, sincerity does not equal truth. His father, T.W. Drost, was terminated by UPCI Global Missions in 2012 as Superintendent of UPC Mexico in a dispute characterized as 'insubordination,' a controversy that divided the Mexican UPCI community. Mark operates across both UPCI and WPF circles — the WPF having split from the UPCI over accusations of 'liberalism and apostasy.' The reported revival numbers ('192 filled with the Holy Ghost') require scrutiny: in Oneness theology, this means 192 people spoke in tongues, which they believe is necessary for salvation — a teaching that creates false assurance for some and crushing spiritual anxiety for others who cannot produce the required 'evidence.'

The Rock Church's doctrinal statement explicitly affirms Oneness theology — the modalistic heresy condemned by the early church as Sabellianism. This theology claims God is one person who manifests in three 'modes' (Father, Son, Spirit), denying the eternal, simultaneous existence of three distinct persons within the Godhead. This directly contradicts Matthew 3:16-17 where all three persons appear simultaneously: the Son is baptized, the Spirit descends like a dove, and the Father speaks from heaven. Jesus prays to the Father (John 17:1-5) — modalism cannot explain why God would pray to Himself. The Oneness rejection of Trinitarian baptism (Matthew 28:19: 'in the name of the Father and of the Son and of the Holy Spirit') in favor of 'Jesus only' baptism replaces Christ's own command with a human doctrinal construct.

Drost operates as a self-employed evangelist with no identifiable ministry organization, no 990 tax filings, no ECFA membership, and no public financial disclosures. His website (markdrost.com) is essentially empty — no ministry information, no financial accountability, no board of directors. As an itinerant evangelist receiving honorariums from churches and conferences, significant income flows through his ministry with zero public accountability. While churches classified as religious organizations are exempt from IRS 990 filing, the complete absence of voluntary transparency is concerning for a ministry of this scale. Scripture requires financial dealings to be 'honorable not only in the sight of the Lord but also in the sight of man' (2 Corinthians 8:21).