"The Faith" - God's Gift "
So then, The Faith (cometh) out-of hearing, and the hearing through or by The Word of Christ (God)" Rom. 10:17.
The Faith is that body of truth, God-given (revealed), unto the recipient for Faith-Obedience. At the same time, the believers' response in faith-obedience demonstrates their personal faith.
FOR EXAMPLE: "By faith, Noah being warned of God of things not seen as yet, moved with fear, prepared an ark to the saving of his house..." Heb. 11:7.
In other words, the faith given (revealed) of God unto Noah was saving faith unto...