'In the Faith' in the Bible

For I long to see you so that I can provide you with some spiritual gift [See I Cor. 12:1-11], for the purpose of strengthening you [in the faith].

For God's righteousness is revealed in it by faith in the faith [the gospel]; as it is written; The righteous shall live by faith.

and the forefather of those circumcised persons who not only share his circumcision but follow our forefather Abraham's example in the faith he had before he was circumcised.

and not having been weak in the faith, he did not consider his own body, already become dead, (being about a hundred years old,) and the deadness of Sarah's womb,

He staggered not at the promise of God through unbelief: But was made strong in the faith, and gave honour to God,

Him that is weak in the faith receive ye, but not to doubtful disputations.

Now to Him who is able to establish and strengthen you [in the faith] according to my gospel and the preaching of Jesus Christ, according to the revelation of the mystery [of the plan of salvation] which has been kept secret for long ages past,