His son by the slave woman was born as the result of human effort, but his son by the free woman was born as the result of a divine promise.
NIV
But whereas the child of the slave woman was born according to the flesh and had an ordinary birth, the son of the free woman was born in fulfillment of the promise.
AMP
But he who was of the bondwoman was born after the flesh; but he of the freewoman was by promise.
KJV
Boaz replied, "I've been told all about what you have done for your mother-in-law since the death of your husband – how you left your father and mother and your homeland and came to live with a people you did not know before."
NIV
And Boaz said to her, I have been made fully aware of all you have done for your mother-in-law since the death of your husband, and how you have left your father and mother and the land of your birth and have come to a people unknown to you before.
AMP
And Boaz answered and said unto her, It hath fully been shewed me, all that thou hast done unto thy mother in law since the death of thine husband: and how thou hast left thy father and thy mother, and the land of thy nativity, and art come unto a people which thou knewest not heretofore.
KJV
"He will renew your life and sustain you in your old age. For your daughter-in-law, who loves you and who is better to you than seven sons, has given him birth."
NIV
And may he be to you a restorer of life and a nourisher and supporter in your old age, for your daughter-in-law who loves you, who is better to you than seven sons, has borne him.
AMP
And he shall be unto thee a restorer of thy life, and a nourisher of thine old age: for thy daughter in law, which loveth thee, which is better to thee than seven sons, hath born him.
KJV
And she became pregnant and gave birth to a son. When she saw that he was a fine child, she hid him for three months.
NIV
And the woman became pregnant and bore a son; and when she saw that he was [exceedingly] beautiful, she hid him three months. [Acts 7:20; Heb. 11:23.]AMP
And the woman conceived, and bare a son: and when she saw him that he was a goodly child, she hid him three months.
KJV