Genesis 21:2

and Sarah conceiveth, and beareth a son to Abraham, to his old age, at the appointed time that God hath spoken of with him;

Galatians 4:22

for it hath been written, that Abraham had two sons, one by the maid-servant, and one by the free-woman,

Hebrews 11:11

By faith also Sarah herself did receive power to conceive seed, and she bare after the time of life, seeing she did judge Him faithful who did promise;

Genesis 17:21

and My covenant I establish with Isaac, whom Sarah doth bear to thee at this appointed time in the next year;'

Genesis 17:19

and God saith, 'Sarah thy wife is certainly bearing a son to thee, and thou hast called his name Isaac, and I have established My covenant with him, for a covenant age-during, to his seed after him.

Genesis 18:10

and he saith, 'returning I return unto thee, about the time of life, and lo, to Sarah thy wife a son.'

Genesis 18:14

And Jehovah saith unto Abraham, 'Why is this? Sarah hath laughed, saying, Is it true really -- I bear -- and I am aged? Is any thing too wonderful for Jehovah? at the appointed time I return unto thee, about the time of life, and Sarah hath a son.'

Acts 7:8

And He gave to him a covenant of circumcision, and so he begat Isaac, and did circumcise him on the eighth day, and Isaac begat Jacob, and Jacob -- the twelve patriarchs;

2 Kings 4:16-17

and he saith, 'At this season, according to the time of life, thou art embracing a son;' and she saith, 'Nay, my lord, O man of God, do not lie unto thy maid-servant.'

Luke 1:24-25

and after those days, his wife Elisabeth conceived, and hid herself five months, saying --

Luke 1:36

and lo, Elisabeth, thy kinswoman, she also hath conceived a son in her old age, and this is the sixth month to her who was called barren;

Romans 9:9

for the word of promise is this; 'According to this time I will come, and there shall be to Sarah a son.'

Treasury of Scripture Knowledge

Summary

For Sarah conceived, and bare Abraham a son in his old age, at the set time of which God had spoken to him.

General references

Bible References

Conceived

2 Kings 4:16
and he saith, 'At this season, according to the time of life, thou art embracing a son;' and she saith, 'Nay, my lord, O man of God, do not lie unto thy maid-servant.'
Luke 1:24
and after those days, his wife Elisabeth conceived, and hid herself five months, saying --
Acts 7:8
And He gave to him a covenant of circumcision, and so he begat Isaac, and did circumcise him on the eighth day, and Isaac begat Jacob, and Jacob -- the twelve patriarchs;
Galatians 4:22
for it hath been written, that Abraham had two sons, one by the maid-servant, and one by the free-woman,
Hebrews 11:11
By faith also Sarah herself did receive power to conceive seed, and she bare after the time of life, seeing she did judge Him faithful who did promise;

At the set

Genesis 17:19
and God saith, 'Sarah thy wife is certainly bearing a son to thee, and thou hast called his name Isaac, and I have established My covenant with him, for a covenant age-during, to his seed after him.
Genesis 18:10
and he saith, 'returning I return unto thee, about the time of life, and lo, to Sarah thy wife a son.'
Romans 9:9
for the word of promise is this; 'According to this time I will come, and there shall be to Sarah a son.'

General references

Luke 1:57
And to Elisabeth was the time fulfilled for her bringing forth, and she bare a son,
Hebrews 6:15
and so, having patiently endured, he did obtain the promise;