NASB
For through the grace given to me I say to everyone among you not to think more highly of himself than he ought to think; but to think so as to have sound judgment, as God has allotted to each a measure of faith.
NIV
For by the grace given me I say to every one of you: Do not think of yourself more highly than you ought, but rather think of yourself with sober judgment, in accordance with the faith God has distributed to each of you.
Some have more faith, some have less faith, but the scripture really does say God has given to every man a certain amount of faith, meaning a man did not give to himself faith.
It is not that man has faith first and then God changes the amount a man has, like take away some faith.
We are not all the same like a machine made part. Go has setup the body to work together, each part supplying what otherwise might be lacking, but God is the designer of the church.
μερίζω merízō, mer-id'-zo; from
G3313; to part, i.e. (literally) to apportion, bestow, share, or (figuratively) to disunite, differ:—deal, be difference between, distribute, divide, give participle
God has bestowed to man the measure of their faith. If you try to separate faith from God nowhere is that scripturally supportable.
And all the verses also tell us it is not of ourselves, it is the gift of God lest a man have something to boast about back to God.
Psalm 89:30-34
New King James Version
30 “If his sons forsake My law
And do not walk in My judgments,
31 If they break My statutes
And do not keep My commandments,
32 Then I will punish their transgression with the rod,
And their iniquity with stripes.
33 Nevertheless My lovingkindness I will not utterly take from him,
Nor allow My faithfulness to fail.
34 My covenant I will not break,
Nor alter the word that has gone out of My lips.
35 Once I have sworn by My holiness;
I will not lie to David:
36 His seed shall endure forever,
And his throne as the sun before Me;
37 It shall be established forever like the moon,
Even
like the faithful witness in the sky.”
Selah
If God says He will not allow His faithfulness to fail to a man that He has a covenant with, then God is going to ensure the man has faith as without faith it is impossible to please Him.
So God makes sure according to His covenant He has established with a man that a man will continue to be faithful, as God only saves believers and without faith it is impossible to please God.
This having faithfulness to God is taught in Galatians 5 as a fruit of the holy Spirit, none of these Spirit filled people failed, as God made sure they did not, so this faithfulness was not of themselves.
I bet a lot of people who say faith is not a covenant gift from God, also say a man can lose their salvation.
Galatians 5:22 But the fruit of the Spirit is love, joy, peace, longsuffering, kindness, goodness,
faithfulness, 23 gentleness, self-control. Against such there is no law.