With the ESV (English Standard Version) and the LSB (Legacy Standard Bible) we have two of the best Bible translations. One of the most significant differences between the ESV and LSB is how they translate the Tetragrammaton which refers to the four Hebrew letters YHWH, the personal name of God.
The ESV usually renders YHWH as LORD. The ESV translators point out that the pronunciation of YHWH is uncertain. Also the Jewish people did not pronounce the personal name of God because it was considered to be so holy. Many ancient translations into Greek, Syriac, and Aramaic also translated it as Lord. Significantly the New Testament writers also followed the same practice by using Lord.
The LSB translates YHWH as Yahweh. This is the way most scholars believe it should be pronounced. The LSB translators believe that Exodus 3:14-15 shows that God considered it important for His people to know His name, and should therefore be translated as Yahweh. They also point out that early church figures such as Origen and Clement of Alexandria show that the covenant or personal name of God was used in the early church.
YHWH is used over 6800 times in the Old Testament. It is first used in Genesis 2:4.