Shaping Children’s Learning Spirit Through Game and Singing Methods: Mentoring in the Sunday School of Jemat Kristen Indonesia Keluarga Kerajaan Salatiga. servire [Internet]. 2024 Dec. 30 [cited 2026 Nov. 1];5(1):1-14. Available from: https://www.jurnal.widyaagape.ac.id/index.php/servire/article/view/204