to be a fervent believer in sth
1believer — noun 1 sb who has religious faith ADJECTIVE ▪ devout, genuine, true ▪ religious ▪ Christian, Muslim, etc. ▪ …
1believer — noun 1 sb who has religious faith ADJECTIVE ▪ devout, genuine, true ▪ religious ▪ Christian, Muslim, etc. ▪ …