Romans 2:18

2:18 and know his will ¹  and approve the superior things because you receive instruction from the law, ² 

Romans 12:2

12:2 Do not be conformed ³  to this present world, ⁴  but be transformed by the renewing of your mind, so that you may test and approve ⁵  what is the will of God – what is good and well-pleasing and perfect.

[2:18]  ¹ tn Grk “the will.”

[2:18]  ² tn Grk “because of being instructed out of the law.”

[12:2]  ³ tn Although συσχηματίζεσθε (suschmatizesqe) could be either a passive or middle, the passive is more likely since it would otherwise have to be a direct middle (“conform yourselves”) and, as such, would be quite rare for NT Greek. It is very telling that being “conformed” to the present world is viewed as a passive notion, for it may suggest that it happens, in part, subconsciously. At the same time, the passive could well be a “permissive passive,” suggesting that there may be some consciousness of the conformity taking place. Most likely, it is a combination of both.

[12:2]  ⁴ tn Grk “to this age.”

[12:2]  ⁵ sn The verb translated test and approve (δοκιμάζω, dokimazw) carries the sense of “test with a positive outcome,” “test so as to approve.”