וַתֹּאמַ֤רְןָ הַֽמְיַלְּדֹת֙ אֶל־פַּרְעֹ֔ה כִּ֣י לֹ֧א כַנָּשִׁ֛ים הַמִּצְרִיֹּ֖ת הָֽעִבְרִיֹּ֑ת כִּֽי־חָי֣וֹת הֵ֔נָּה בְּטֶ֨רֶם תָּב֧וֹא אֲלֵהֶ֛ן הַמְיַלֶּ֖דֶת וְיָלָֽדוּ׃
And the midwives said unto Pharaoh: ‘Because the Hebrew women are not as the Egyptian women; for they are lively, and are delivered ere the midwife come unto them.’
Read kabbalistic (mystical) interpretation of Exodus 1:19: and classical mystical sources.