Genesis 26:33
ESV
He called it Shibah; therefore the name of the city is Beersheba to this day.
NIV
He called it Shibah, and to this day the name of the town has been Beersheba.
NASB
So he called it Shibah; therefore the name of the city is Beersheba to this day.
CSB
He called it Sheba. Therefore the name of the city is still Beer-sheba today.
NLT
So Isaac named the well Shibah (which means 'oath'). And to this day the town that grew up there is called Beersheba (which means 'well of the oath').
KJV
And he called it Shebah: therefore the name of the city is Beersheba unto this day.
NKJV
So he called it Shebah. Therefore the name of the city is Beersheba to this day.
What does Genesis 26:33 mean?
Isaac has just concluded brief negotiations with the local king, Abimelech (Genesis 26:26–31). This agreement establishes peace and also serves to remind Isaac that God's promises are true. Just as God honored His oaths to Abraham, He will do so with Abraham's son, Isaac. As the feast celebrating the peace treaty concludes, Isaac's servants came with the good news that the well they've been digging yielded water. This is likely the well whose construction was described verse 25.Isaac's habit is to name wells for the circumstances surrounding their discovery. He calls this one Shibah, which sounds like the Hebrew word for "oath," to celebrate the oaths for peace he has just exchanged with King Abimelech. Thus the name Abraham had given this place is reinforced (Genesis 21:31–34). Beersheba means "well of the oath."
Genesis 26:6–35 describes Isaac's interactions with the Philistines while living in and around the land of Gerar. After Isaac is caught in a lie about Rebekah being his sister, king Abimelech is angry. However, he protects Isaac and Rebekah. God blesses Isaac abundantly, and his wealth grows to the point where his power provokes the king to send him away. Following a series of disputes over water rights, the king and Isaac eventually make a treaty of peace. God appears to Isaac for a second time, telling him not to fear, and renewing His promises.
Genesis 26 focuses on God's assurances to Isaac to be with him and to bless him, mostly while Isaac and his household are settled in the land of the Philistines. Just as Abraham did, Isaac fearfully lies about his wife being his sister, nearly bringing disaster on Abimelech and his kingdom. Still, God blesses Isaac with greater and greater abundance to the point that Abimelech sends Isaac away because he has become too powerful. After continued disputes over water rights, Abimelech and Isaac eventually make a covenant of peace.