The LORD who Sanctifies is a name that states the truth that Yahweh (Jehovah) is a sanctifying God and only He can sanctify. Sanctification is the process of moving from the profane or common to the holy or set apart. The word is similar to the idea of spiritual cleansing. This name of God is related to names that speak of His holiness (qodesh) like Holy God, Holy One, and the Spirit of holiness.
The LORD Who Sanctifies in Hebrew:
Strong’s Concordance numbers: 3068, 6942
Bible references: Ex. 31:13; Lev. 20:8; 21:15, 23; 22:9, 16, 32; Ezek. 20:12; 37:28.
But as for you, speak to the sons of Israel, saying, ‘You shall surely observe My sabbaths; for this is a sign between Me and you throughout your generations, that you may know that I am the Lord who sanctifies you. (Exodus 31:13)
NIV has “the Lord, who makes you holy.”