(ἔσονται) αἱ τραχεῖαι εἰς ὁδοὺς λείας has some sort of grammatical agreement. The second εἰς is being used to say what different adjective now characterises the road (i.e. it will change), but the agreement doesn't work in the first phrase; καὶ ἔσται τὰ σκολιὰ εἰς εὐθεῖαν.Luke 3:5 wrote:Πᾶσα φάραγξ πληρωθήσεται, καὶ πᾶν ὄρος καὶ βουνὸς ταπεινωθήσεται· καὶ ἔσται τὰ σκολιὰ εἰς εὐθεῖαν, καὶ αἱ τραχεῖαι εἰς ὁδοὺς λείας·
Basically the question is; Why is εὐθεῖαν a feminine singular here? Is it an adjective or a substantivised form?
The possibilities I can find / imagine are;
- There is some sort of understood opposite to σκολιότης to be understood with the adjective (An abstract word) - this is unlikely given the genre,
- After LSJ the εὐθεῖα has the meaning "straight line" (i.e. there is an understood γραμμή), i.e. is the first εἰς being used as the benchmark by which the road is measured
- After BDAG there is an understood ῥύμη "street" to be read here.