Why can’t we translate the non-imperative clauses in Romans 12:9-13 as something other than imperatives? I don’t see any reason why not. In fact, I believe that translating these non-imperative forms as commands puts too much emphasis on our human effort that just isn’t in the text at this point. The introduction of 14 commands in this passage also has the effect of hiding the more relevant theme that must be continuing in this passage of the Spirit’s control of our minds (cf. Rom. 8:4ff; 12:2,6). The tension within the ethics of the New Testament is that we are frequently commanded to do what we are only able to do through the gift of the Holy Spirit in our lives. The pages of the New Testament do also give plain descriptions of what Spirit-regenerated life looks like, and these should not all be reduced to the rhetoric of direct instructions.
Understood descriptively, vv. 9-13 offer a detailed picture of what love looks like after the preceding discussion of gifts (analagous to 1 Cor. 12-13). It is not a series of orders, but it would have been heard as an attractive description of what love does. Certainly this should motivate us to those actions, but the real power behind any of these loving behaviors is the control of the Holy Spirit in our hearts. These aren’t just mitigated commands. The expository nature of the text leaves more room for figuring in the role of the Spirit.
The real difficulty is how to translate this passage into English when there are some surprising subject-verb agreement features of the Greek text that can’t be automatically carried over into English. The first phrase says “Love (singular) [is] unhypocritical (singular),” but the following supporting phrases are all plural verbal participles (e.g. “abhorring (plural) evil, clinging (plural) to the good…”).
I think the main reason all our English translations go the way of expressing all 14 of these clauses as commands where there isn’t a single imperative verb is this: in trying to do justice to the apparent discrepancy of the lack of number agreement between the first singular clause and the following plural participles, making them all commands apparently solves this problem in English. By supplying an implied command (“let be”) for the first clause (“let love be unhypocritical”), there is no longer any lack of agreement between the subject of the first clause and the assumed plural “you” subject of all the following participles. The subject now is always ‘you’.
The big problem, however, is that the grammatical subject of this whole paragraph is ‘love’. The traditional English solution loses that and shifts the entire focus to ‘you’. A second person plural subject is not expressed in any form in any of these 14 clauses in vv. 9-13 (nor in the previous 5 verses).
A better understanding of the apparent mismatch in the Greek subject-verb agreement of vs. 9 is that Greek normally allows the semantics of the situation to dictate the forms of the subject and verb. This is regularly seen in various disagreements for person and number when there are compound subjects, and for a variety of semantic reasons (see my summary of the issues here). In Rom. 12:9 the disagreement comes about because the true initial subject of the paragraph is the singular notion of love, but Paul is talking about love that is expressed by the multiple members of the body of Christ. The mismatch in number agreement happens when the singular abstract concept of ‘love’ is introduced and then described by participles that are plural due to the multiple agents in view.
Here’s my first attempt at a translation. Notice that the first command does not occur until vs. 14…
9 Love is unhypocritical: it is people abhorring evil, clinging to the good, 10 affectionate to one another with brotherly love, leading the way in showing honor to one another, 11 not shrunk back in eagerness, boiling over in the Spirit, serving the Lord, 12 rejoicing in hope, enduring suffering, persevering in prayer, 13 sharing their possessions for the needs of the saints, pursuing love between strangers. 14 Bless the ones pursuing you; bless and do not curse.
After translating this passage to more carefully reflect what is happening in the original text, a few things stand out that are not so apparent when all the dependent clauses are translated as separate commands…
The single sentence that includes vv. 9-13 starts off with the broad thematic content of the paragraph, namely, that love is unhypocritical. This theme is illustrated by a broad movement in the following participles from showing love to the brothers in the community who are called saints to a love that endures suffering and is sought after even between strangers.
The transition from the string of participial and adjective phrases in vv. 9-13 to the commands in vs. 14 is marked by the double use of DIWKW ‘pursue’ in vs. 13 in the sense of ‘hospitality’ (or more literally “pursuing love between strangers”) and in vs. 14 in the sense of “bless the ones pursuing (i.e. persecuting) you.”
Understood as a description rather than a series of commands, it also becomes more reasonable to understand the TW PNEUMATI as “the Spirit” rather than as the human spirit that one can manipulate. And that, I believe, is the whole point of Paul using participles in this paragraph rather than imperative verbs. It’s the Spirit’s work, first of all, before it is our own.