Saints from ancient days have punctuated their prayers, both spoken & sung, public & private with “Amen.” An early church father, Jerome, described the early church’s practice of hearty “Amens” this way: “Where else does the ‘Amen’ resound in the likeness of thunder of the divine heaven & the empty temples of pagan idols are shaken?”
So then, adopting this practice isn’t just keeping a tradition alive. Rather, as we declare in unison hearty Amens we’re doing a few things. A temptation in Western Christianity is to limit faith to what happens between our ears. But by shouting joyful amens, we use our body to vocalize our agreement with both God’s promises & what He’s produced in us by grace.