Hayo de Vries is an evangelist from the Netherlands who is dedicated to preaching the Gospel of Jesus Christ and helping believers grow into mature disciples. His ministry flows through two main expressions: proclaiming the Gospel as an evangelist—both in churches and on international evangelism trips—and equipping believers through his online training platform, 50Days of Discipleship. Through clear biblical teaching, practical training, and a heart for the Kingdom of God, he serves individuals, churches, and leaders who desire spiritual growth and transformation.