Romans 4:21

and having been fully persuaded that what He hath promised He is able also to do:

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.'

Hebrews 11:19

reckoning that even out of the dead God is able to raise up, whence also in a figure he did receive him.

2 Timothy 1:12

for which cause also these things I suffer, but I am not ashamed, for I have known in whom I have believed, and have been persuaded that he is able that which I have committed to him to guard -- to that day.

Psalm 115:3

And our God is in the heavens, All that He hath pleased He hath done.

Jeremiah 32:17

'Ah, Lord Jehovah, lo, Thou hast made the heavens and the earth by Thy great power, and by Thy stretched-out arm; there is nothing too wonderful for Thee:

Jeremiah 32:27

Lo, I am Jehovah, God of all flesh: For Me is anything too wonderful?

Matthew 19:26

And Jesus having earnestly beheld, said to them, 'With men this is impossible, but with God all things are possible.'

Luke 1:37

because nothing shall be impossible with God.'

Luke 1:45

and happy is she who did believe, for there shall be a completion to the things spoken to her from the Lord.'

Romans 8:38

for I am persuaded that neither death, nor life, nor messengers, nor principalities, nor powers, nor things present,

Romans 14:4

Thou -- who art thou that art judging another's domestic? to his own master he doth stand or fall; and he shall be made to stand, for God is able to make him stand.

2 Corinthians 9:8

and God is able all grace to cause to abound to you, that in every thing always all sufficiency having, ye may abound to every good work,

Hebrews 11:13

In faith died all these, not having received the promises, but from afar having seen them, and having been persuaded, and having saluted them, and having confessed that strangers and sojourners they are upon the earth,

Treasury of Scripture Knowledge

Summary

And being fully persuaded that, what he had promised, he was able also to perform.

General references

Bible References

Fully

Romans 8:38
for I am persuaded that neither death, nor life, nor messengers, nor principalities, nor powers, nor things present,
2 Timothy 1:12
for which cause also these things I suffer, but I am not ashamed, for I have known in whom I have believed, and have been persuaded that he is able that which I have committed to him to guard -- to that day.
Hebrews 11:13
In faith died all these, not having received the promises, but from afar having seen them, and having been persuaded, and having saluted them, and having confessed that strangers and sojourners they are upon the earth,

He was able

Romans 14:4
Thou -- who art thou that art judging another's domestic? to his own master he doth stand or fall; and he shall be made to stand, for God is able to make him stand.
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.'
Psalm 115:3
And our God is in the heavens, All that He hath pleased He hath done.
Jeremiah 32:17
'Ah, Lord Jehovah, lo, Thou hast made the heavens and the earth by Thy great power, and by Thy stretched-out arm; there is nothing too wonderful for Thee:
Matthew 19:26
And Jesus having earnestly beheld, said to them, 'With men this is impossible, but with God all things are possible.'
Luke 1:37
because nothing shall be impossible with God.'
2 Corinthians 9:8
and God is able all grace to cause to abound to you, that in every thing always all sufficiency having, ye may abound to every good work,
Hebrews 11:19
reckoning that even out of the dead God is able to raise up, whence also in a figure he did receive him.

General references

Psalm 22:4
In Thee did our fathers trust -- they trusted, And Thou dost deliver them.