Tolong jelaskan mengenai Ishak (Kejadian 21:4) dari Penyunatan Yesus

Peristiwa tersebut dirayakan sebagai Perayaan Penyunatan di Gereja Ortodoks Timur pada 1 Januari berdasarkan pada kalender (Lama atau Baru) yang digunakan, dan juga dirayakan pada hari yang sama oleh sejumlah gereja Anglikan.

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