If you enter “mark of the beast” in the search bar of the FAQs, you will find some good answers. However, there is a fine sermon on the topic as well in YouTube, delivered at a Christian conference in July of 2021: https://www.youtube.com/watch?v=xqYNglDWuOA&t=329s
Additional Resources:
For children, parents and Bible class teachers, please watch this short, animated video:
Christian Questions CQ Kids Video: “Did God send the Coronavirus?”
Christian Questions Podcast Episode #1145: “Is Your COVID-19 Christianity Still Being Tested?”
Action steps to prevent COVID-19 from compromising our Christianity
Preview Video
CQ Rewind Show Notes