It seems likely that synagogues were instituted during the 70 - year Babylonian exile when there was no temple in existence or shortly after the return from exile while the temple was being reconstructed.
Kemungkinan besar, sinagoga - sinagoga itu berasal dari masa 70 tahun pembuangan di Babilon, sewaktu tidak ada bait, atau dari masa tidak lama setelah kembalinya mereka dari pembuangan manakala bait sedang dibangun kembali.