Today we will continue with the thought of Francis Turretin on the use of faith in justification. In this section he is giving “proof that the act of believing is not our righteousness.”
Two things therefore must be done by us here. First, negatively (kat’ arsin), the false mode of the justification of faith (introduced by the Socinians and Romanists) must be removed. Second, affirmatively (kata thesin) true and genuine sense must be established. As to the former, faith or the act of believing is not considered as our righteousness with God by a gracious acceptation: (a) because what is only the instrument for receiving righteousness cannot be our righteousness itself formally. Now faith holds here only the relation (schesin) of an instrument, as is evident both from its proper act (which is instrumental and consists in the reception of Christ [Jn. 1:12] and the acceptance of righteousness [Rom. 5:17] and of the remission of sins [Acts 26:18]); and from the subordination of the causes of justification to the same effect (to wit, the grace of God, the redemption of Christ and faith). This is alluded to by Paul in Rom. 3:24 where faith cannot sustain any other meaning than that of an instrument, since the grace of God holds the relation of an efficient principle and the redemption of Christ that of the meritorious cause.
We started this line of thought by setting out John Owen’s five ways that faith can be used. When we say that justification is by faith alone, something is meant or intended regarding how faith is involved in justification. Here are the five ways that faith can be used: 1. It is used as an instrument. 2. It is a condition. 3. It is a causa sine qua non. The term sine qua non means “without which, not” and is something that is absolutely essential. The causa refers to a cause and so faith is seen as a cause that is utterly essential. 4. It prepares and disposes men to receive justification. 5. It merits justification in a congruous way. Turretin and Owen consider that faith must be thought of as an instrument of justification in order for justification to be by grace alone. In the previous paragraph Turretin’s words stand against faith being a condition, a causa sine qua non, and that it merits justification.
When we think of the words “by faith” in justification by faith alone, if we are going to attach any meaning to the words in the statement as a whole then “by faith” has to be understood in some way. Faith is either an instrument which receives Christ and grace or it has an active role in justification. Faith either receives righteousness as a free gift of God or it fulfills the condition of God and is in and of itself counted as righteousness. The texts that Turretin brings out are quite powerful in showing that faith is an instrument alone. John 1:12-13 show this clearly: “But as many as received Him, to them He gave the right to become children of God, even to those who believe in His name, 13 who were born, not of blood nor of the will of the flesh nor of the will of man, but of God.” In these verses receiving and believing are seen as the same thing. Christ is received by faith rather than coming as a result of anything else that faith is or does. Romans 5:17 shows that righteousness is a gift by grace rather than caused in some way by faith: “For if by the transgression of the one, death reigned through the one, much more those who receive the abundance of grace and of the gift of righteousness will reign in life through the One, Jesus Christ.”
So far we see that Christ is received by faith and that grace and righteousness are received. In other words, righteousness is not the same thing as faith. The righteousness of Christ and grace are received by faith rather than faith being counted righteous in and of itself. What we must see is the disorder that other views of faith bring into the Gospel of grace alone. If faith is something other than an instrument that receives, then faith is the efficient cause of justification rather than grace alone. If faith is something other than an instrument alone, then the redemption of Christ does not procure salvation but faith has some ability to do so. This makes faith to merit salvation in some way and to some degree rather than Christ alone. If faith itself is our righteousness, then we have earned righteousness by coming up with faith rather than our righteousness coming as a free gift when the righteousness of Christ is imputed to believers. Romans 3:24 shows the place of faith when it ascribes all causes to grace, redemption, and Christ: “being justified as a gift by His grace through the redemption which is in Christ Jesus.” This shows us that when some say they believe in justification by faith alone, they think of faith as a work that they do. The Bible teaches that the only thing that faith does in is to be an instrument to receive Christ and His righteousness as all grace. If faith is anything but an instrument that receives grace apart from any work at all, the Gospel is not of Christ alone and it is not of grace alone. It would be Christ plus our faith or grace plus the work of faith. This is not only unacceptable, it is a different gospel which is no gospel at all.