Mark Vander Pol is a graduate of Westminster Seminary California and a ruling elder at Christ United Reformed Church, Santee, California. The video was produced by Leon Brown, also a graduate of WSC. His YouTube channel is worth checking out. Mark gives a brief account of what the Heidelberg Catechism is, who wrote it, and how it was intended to be used and he does all this in one minute, 49 seconds!. This is a great resource for catechism and Christian Education.