אִם־שָׁ֭כַחְנוּ שֵׁ֣ם אֱלֹהֵ֑ינוּ וַנִּפְרֹ֥שׂ כַּ֝פֵּ֗ינוּ לְאֵ֣ל זָֽר׃
If we had forgotten the name of our God, or spread forth our hands to a strange god; .
Read kabbalistic (mystical) interpretation of Psalms 44:21: and classical mystical sources.