Faith begins with & is worthless without: Christ's Faith as the foundation:
Hebrews 12: Looking unto Jesus the author and finisher of our faith; who for the joy that was set before him endured the cross, despising the shame, and is set down at the right hand of the throne of God.
(NOTE: Christ is the author/begining & finisher/end of all faith)
It's a sinless Christ's faithful redemptive work & our faith placed in it
Rom 3:22 Even the righteousness of God which is by "faith of Jesus Christ" unto all and upon all them that believe: for there is no difference:
(NOTE: The Faith "OF" Christ)
Gal 2:16 Knowing that a man is not justified by the works of the law, but by the faith of Jesus Christ, even we have believed in Jesus Christ, that we might be justified by the "faith of Christ" and not by the works of the law: for by the works of the law shall no flesh be justified.
(NOTE: It's the Faith "OF" Christ and thru the righteousness of Christ's faith. Christ becomes the Lord our righteousness (Jer 23:6 & 33:16). And God justifies us "Declares us Righteous in His sight)
Gal 2:20 I am crucified with Christ: nevertheless I live; yet not I, but Christ liveth in me: and the life which I now live in the flesh I live by the faith of the Son of God, who loved me, and gave himself for me.
(NOTE: We live by the faith "OF" the Son of God, who loved me, and gave himself for me
Gal 3:22 But the scripture hath concluded all under sin, that the promise by faith of Jesus Christ might be given to them that believe.
(NOTE: The promise by the faith "OF" Jesus Christ It's our Faith placed in Christ's work)
Rom 1:17 For therein is the righteousness of God revealed from faith to faith: as it is written, The just shall live by faith.
(NOTE: From Faith to Faith)
Habakkuk 2:4 Behold, his soul which is lifted up is not upright in him: but the just shall live by his faith.
(NOTE: The just live by """HIS""" faith!)
Phil 3:9 And be found in him, not having mine own righteousness, which is of the law, but "that which is through the faith of Christ", the righteousness which is of God by faith:
(NOTE: Not by our own righteousness abtained thru law keeping. BUT thru the faith "OF" Christ)
Acts 26:18 To open their eyes, and to turn them from darkness to light, and from the power of Satan unto God, that they may receive forgiveness of sins, and inheritance among them which are sanctified by faith that is in me.
(NOTE: Jesus say's, we are sanctified by faith that is IN ME).
We access Gods Grace thru Faith (Rom 5:2) placed in Christ's finished redemptive sin atoning sacrificial work. Found in Christ's death (Sins required price PAID), burial (proof Jesus died) & resurrection (God's receipt, payment received & accepted). Then God imputes/transfers Christ's righteousness onto us & transfers/imputes our sins onto Christ. See this process in Lev 4: 22,24,27,29,31,32,33,35 & Lev 16:21 & Rom 4:3-8)