GOD'S WORD® Translation
Therefore, the promise is based on faith so that it can be a gift. Consequently, the promise is guaranteed for every descendant, not only for those who are descendants by obeying Moses' Teachings but also for those who are descendants by believing as Abraham did. He is the father of all of us,

American Standard Version
For this cause it is of faith, that it may be according to grace; to the end that the promise may be sure to all the seed; not to that only which is of the law, but to that also which is of the faith of Abraham, who is the father of us all

Berean Study Bible
Therefore, the promise comes by faith, so that it may rest on grace and may be guaranteed to all Abraham’s offspring—not only to those who are of the law, but also to those who are of the faith of Abraham. He is the father of us all.

Douay-Rheims Bible
Therefore is it of faith, that according to grace the promise might be firm to all the seed; not to that only which is of the law, but to that also which is of the faith of Abraham, who is the father of us all,

English Revised Version
For this cause it is of faith, that it may be according to grace; to the end that the promise may be sure to all the seed; not to that only which is of the law, but to that also which is of the faith of Abraham, who is the father of us all

King James Bible
Therefore it is of faith, that it might be by grace; to the end the promise might be sure to all the seed; not to that only which is of the law, but to that also which is of the faith of Abraham; who is the father of us all,

World English Bible
For this cause it is of faith, that it may be according to grace, to the end that the promise may be sure to all the seed, not to that only which is of the law, but to that also which is of the faith of Abraham, who is the father of us all.

Young's Literal Translation
Because of this it is of faith, that it may be according to grace, for the promise being sure to all the seed, not to that which is of the law only, but also to that which is of the faith of Abraham,

Romans 4:16 Additional Translations ...