For if the inheritance is of the law, then it is no longer of the promise. But God bestowed it to Abraham through the promise
Other versions
King James Version
For if the inheritance be of the law, it is no more of promise: but God gave it to Abraham by promise.English Standard Version
For if the inheritance comes by the law, it no longer comes by promise; but God gave it to Abraham by a promise.New International Version
For if the inheritance depends on the law, then it no longer depends on a promise; but God in his grace gave it to Abraham through a promise.