Making clay fell into the category of "kneading" which was forbidden on the Sabbath (cf. Mishnah Shabbat 7.2; The Gospel of John [Catholic Commentary on Sacred Scripture], 176)
Genesis 2:7 - "Then the LORD God formed man of dust from the ground, and breathed into his nostrils the breath of life; and man became a living being."
Making clay fell into the category of "kneading" which was forbidden on the Sabbath (cf. Mishnah Shabbat 7.2; The Gospel of John [Catholic Commentary on Sacred Scripture], 176)
Genesis 2:7 - "Then the LORD God formed man of dust from the ground, and breathed into his nostrils the breath of life; and man became a living being."