The Christian faith is contagious. If we are to endure as Christians, it must be through apprenticeship-observing more experienced and well-formed Christians, following their moves, taking up their way of life, inculcating their virtues. Through such observation and imitation, we take up the practices of faith and come to embody those practices for ourselves. The church must look for ample opportunities for its members to be observed by and to observe one another as we mature in the faith.
From the Renovare Study Bible notes to 2Timothy 3:10.