Parallel
Genesis 21:4
Westminster Leningrad Codex · Berean Standard Bible
וַיָּ֤מָל אַבְרָהָם֙ אֶת־ יִצְחָ֣ק בְּנ֔וֹ בֶּן־ שְׁמֹנַ֖ת יָמִ֑ים כַּאֲשֶׁ֛ר צִוָּ֥ה אֹת֖וֹ אֱלֹהִֽים׃
When his son Isaac was eight days old, Abraham circumcised him, as God had commanded him.