Converted at the age of 20, Ramon began serving the Lord in evangelism the next year. He has continued in the ministry for over 40 years, which has included open air evangelism with films back in 1970-74, and serving as an evangelist to Indian tribes. He has also served as pastor of two churches, been involved in church planting, and has taught in a Bible School for Indians. Now he works alongside his brother Felipe as a full-time evangelist with OAC Paraguay, and continues to proclaim the gospel in the open air and in public school assemblies after film showings.