G. K. Njeru and J. Kiboi, “Sabbath Observance in the Context of COVID-19 Pandemic: Are the Challenges of Physical Observance of the Sabbath Hurting the ‘Mark of a True Church’ Among the Adventists?”, JJEOSHS, vol. 4, no. 1, pp. 1–12, Sep. 2021, doi: 10.35544/jjeoshs.v4i1.37.