2 Corinthians 3:5

not that we can of ourselves reckon upon any thing as from ourselves, but our sufficiency is from God.

1 Corinthians 15:10

But by the grace of God I am what I am: and his favor to me was not in vain; but I laboured more abundantly than they all; yet not I, but the grace of God that was with me.

Matthew 10:19-20

but when they take you up, be not sollicitous how, or what ye shall say; for ye shall be taught in that very instant what ye shall speak: for it is not you that speak,

Luke 21:15

which all your adversaries shall not be able to contradict nor withstand.

Luke 24:49

but do ye continue in the city of Jerusalem, till ye are endued with power from on high.

John 15:5

I am the vine, ye are the branches; he that abideth in me, and I in him, beareth much fruit: but without me ye can do nothing.

1 Corinthians 3:6

I have planted, Apollos watered: but God gave the increase.

1 Corinthians 3:10

According to the grace of God given to me, as a wise architect I have laid the foundation, and another buildeth thereon: but let every one see to it how he buildeth thereon.

2 Corinthians 2:16

to these indeed we are an odor of death to death; to those an odor of life unto life. And who is sufficient for these things?

2 Corinthians 4:7

But we have this treasure in earthen vessels, that the excellence of the power might be evidently of God, and not of us:

2 Corinthians 12:9

And He said unto me, "My grace is sufficient for thee: for my power is manifested in thy weakness." With the greatest pleasure therefore will I glory in my infirmities, that the power of Christ may rest upon me.

Philippians 2:13

for it is God that worketh in you both to will, and to work, out of his own good-pleasure.

Philippians 4:13

I can do all things through Christ strengthening me.

James 1:17

and every perfect gift, but no evil one, is from above, and cometh down from the Father of lights, with whom there is no variation, nor shadow of turning:

Treasury of Scripture Knowledge

Summary

Not that we are sufficient of ourselves to think any thing as of ourselves; but our sufficiency is of God;

Bible References

But

2 Corinthians 12:9
And He said unto me, "My grace is sufficient for thee: for my power is manifested in thy weakness." With the greatest pleasure therefore will I glory in my infirmities, that the power of Christ may rest upon me.
Matthew 10:19
but when they take you up, be not sollicitous how, or what ye shall say; for ye shall be taught in that very instant what ye shall speak: for it is not you that speak,
Luke 21:15
which all your adversaries shall not be able to contradict nor withstand.
Luke 24:49
but do ye continue in the city of Jerusalem, till ye are endued with power from on high.
1 Corinthians 3:6
I have planted, Apollos watered: but God gave the increase.
1 Corinthians 15:10
But by the grace of God I am what I am: and his favor to me was not in vain; but I laboured more abundantly than they all; yet not I, but the grace of God that was with me.
Philippians 2:13
for it is God that worketh in you both to will, and to work, out of his own good-pleasure.
Philippians 4:13
I can do all things through Christ strengthening me.
James 1:17
and every perfect gift, but no evil one, is from above, and cometh down from the Father of lights, with whom there is no variation, nor shadow of turning: