Romans 4:21

and being fully assured, that whatsoever he has promised, he is able also to perform.

Hebrews 11:19

considering that God is able to raise him from the dead; whence he also received him in a figure.

2 Timothy 1:12

on account of which cause I indeed suffer these things: but I am not ashamed; for I know whom I have believed, and am persuaded that he is able to stand guard over that which is committed unto me unto that day.

Matthew 19:26

And Jesus looking on them said; With men this is impossible; but all things are possible with God.

Luke 1:37

Because no word shall be impossible with God.

Luke 1:45

And blessed is she that believeth, because there shall be a perfection to those things having been spoken to her by the Lord.

Romans 8:38

For I am persuaded that, neither death, nor life, nor angels, nor principalities, nor things present, nor things to come,

Romans 14:4

Who art thou judging another man's servant? to his own master he stands or falls: but he shall stand; for God is able to make him stand.

2 Corinthians 9:8

But God is able to make all grace abound unto you; in order that, always having all sufficiency in every thing, you may abound unto every good work: as has been written,

Hebrews 11:13

These all died in the faith, not having received the promises, but seeing them afar off, and embracing them, and confessing that they are strangers and pilgrims on the earth.

Treasury of Scripture Knowledge

Summary

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

Bible References

Fully

Romans 8:38
For I am persuaded that, neither death, nor life, nor angels, nor principalities, nor things present, nor things to come,
2 Timothy 1:12
on account of which cause I indeed suffer these things: but I am not ashamed; for I know whom I have believed, and am persuaded that he is able to stand guard over that which is committed unto me unto that day.
Hebrews 11:13
These all died in the faith, not having received the promises, but seeing them afar off, and embracing them, and confessing that they are strangers and pilgrims on the earth.

He was able

Romans 14:4
Who art thou judging another man's servant? to his own master he stands or falls: but he shall stand; for God is able to make him stand.
Matthew 19:26
And Jesus looking on them said; With men this is impossible; but all things are possible with God.
Luke 1:37
Because no word shall be impossible with God.
2 Corinthians 9:8
But God is able to make all grace abound unto you; in order that, always having all sufficiency in every thing, you may abound unto every good work: as has been written,
Hebrews 11:19
considering that God is able to raise him from the dead; whence he also received him in a figure.