Which covenant he made
karath (kaw-rath')
to cut (off, down or asunder); by implication, to destroy or consume; specifically, to covenant
with Abraham
'Abraham (ab-raw-hawm')
father of a multitude; Abraham, the later name of Abram -- Abraham.
and his oath
shbuw`ah (sheb-oo-aw')
something sworn, i.e. an oath -- curse, oath, sworn.
unto Isaac
Yischaq (yis-khawk')
he will laugh; Jischak, the heir of Abraham -- Isaac.