The level of attendance of young people attending worship services at GEPKIN Tarutung City has increased. According to the author's observations, this is influenced by several factors such as: music, interesting sermons, welcoming guests, and variations in service. The method used by researchers is a qualitative descriptive approach. The research implementation uses procedures that produce descriptive data in the form of written and spoken words from people whose behavior is observed through interviews or observations using a qualitative approach. This research aims to determine the factors that influence the high level of attendance of young people in worship at GEPKIN Tarutung City. From the research results, it can be seen that the factors of music, interesting sermons, welcoming guests, variety of services can increase the high attendance of young people in worship at GEPKIN Tarutung city. With the factors that influence the high level of attendance of young people, it can increase the presence of young people in worship at GEPKIN Tarutung city.

Sunday school learning which initially used the lecture method, now there are various churches that use various teaching methods, one of which is audio-visual media. The problem, according to the author's observations, especially at the Fellowship Protestant Church (GPP) Parhorboan Resort Tapanuli Utara II, is that school teachers are still lacking in using teaching methods that can create interaction between teachers and children, thus having an impact on children's interest in participating in Sunday school worship. The research method used in this research is a descriptive qualitative method. The research implementation uses procedures that produce descriptive data in the form of written and spoken words from people whose behavior is observed through interviews or observations using a qualitative approach. This research aims to find out how to increase the interest of Sunday school children aged 9-12 years in attending Sunday services at the Fellowship Protestant Church (GPP) Parhorboan Resort Tapanuli Utara II through the use of audio-visual media. The results of this research show that Sunday school children receiving teaching delivered by Sunday school teachers using audio-visual media can increase Sunday school children's interest in attending worship.