Shem was one of the three sons of Noah (Canaan and Japheth were the other two). Noah spoke the name when he blessed Shem. We know very little about Shem, but he had a relationship with God. Noah acknowledged the relationship when he used this name for God.
God of Shem in Hebrew:
Strong’s Concordance numbers: 430, 8035
Bible reference: Gen. 9:26
And [Noah] said, “Blessed be the Lord God of Shem; and Canaan shall be his servant.” (Genesis 9:26 KJV)