by.

1 Corinthians 4:7
For who makes you so superior? What do you have that you did not receive? And if you did receive it, why do you boast as though you did not?

Romans 11:1, 5, 6
I ask then, did God reject His people? Certainly not! I am an Israelite myself, a descendant of Abraham, from the tribe of Benjamin. . . .

Ephesians 2:7, 8
in order that in the coming ages He might display the surpassing riches of His grace, demonstrated by His kindness to us in Christ Jesus. . . .

Ephesians 3:7, 8
I became a servant of this gospel by the gift of God's grace, given me through the working of His power. . . .

1 Timothy 1:15, 16
This is a trustworthy saying, worthy of full acceptance: Christ Jesus came into the world to save sinners, of whom I am the worst. . . .

his grace.

1 Corinthians 15:2
By this gospel you are saved, if you hold firmly to the word I preached to you. Otherwise, you have believed in vain.

2 Corinthians 6:1
As God's fellow workers, we urge you not to receive God's grace in vain.

but I.

Romans 15:17-20
Therefore I exult in Christ Jesus in my service to God. . . .

2 Corinthians 10:12-16
We do not dare to classify or compare ourselves with some who commend themselves. When they measure themselves by themselves and compare themselves with themselves, they show their ignorance. . . .

2 Corinthians 11:23-30
Are they servants of Christ? I am speaking like I am out of my mind, but I am so much more: in harder labor, in more imprisonments, in worse beatings, in frequent danger of death. . . .

2 Corinthians 12:11
I have become a fool, but you drove me to it. In fact, you should have commended me, since I am in no way inferior to those "super-apostles, " even though I am nothing.

yet.

Matthew 10:20
For it will not be you speaking, but the Spirit of your Father speaking through you.

2 Corinthians 3:5
Not that we are competent in ourselves to claim that anything comes from us, but our competence comes from God.

Galatians 2:8
For God, who was at work in Peter's apostleship to the Jews, was also at work in my apostleship to the Gentiles.

Ephesians 3:7
I became a servant of this gospel by the gift of God's grace, given me through the working of His power.

Philippians 2:13
For it is God who works in you to will and to act on behalf of His good pleasure.

Philippians 4:13
I can do all things through Christ who gives me strength.

Colossians 1:28, 29
We proclaim Him, admonishing and teaching everyone with all wisdom, so that we may present everyone perfect in Christ. . . .