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KJV - That is, They which are the children of the flesh, these are not the children of God: but the children of the promise are counted for the seed.
ASV - That is, it is not the children of the flesh that are children of God; but the children of the promise are reckoned for a seed.
BBE - That is, it is not the children of the flesh, but the children of God's undertaking, who are named as the seed.
WEB - That is, it is not the children of the flesh who are children of God, but the children of the promise are counted as a seed.
YLT - that is, the children of the flesh -- these `are' not children of God; but the children of the promise are reckoned for seed;