Luke 5:37

5:37 And no one pours new wine into old wineskins. 1  If he does, the new wine will burst the skins and will be spilled, and the skins will be destroyed.

Luke 6:48

6:48 He is like a man 2  building a house, who dug down deep, 3  and laid the foundation on bedrock. When 4  a flood came, the river 5  burst against that house but 6  could not shake it, because it had been well built. 7 

1 sn Wineskins were bags made of skin or leather, used for storing wine in NT times. As the new wine fermented and expanded, it would stretch the new wineskins. Putting new (unfermented) wine in old wineskins, which had already been stretched, would result in the bursting of the wineskins.

2 tn Here and in v. 49 the Greek text reads ἄνθρωπος (anqrwpo"), while the parallel account in Matt 7:24-27 uses ἀνήρ (anhr) in vv. 24 and 26.

3 tn There are actually two different Greek verbs used here: “who dug (ἔσκαψεν, eskayen) and dug deep (ἐβάθυνεν, ebaqunen).” Jesus is placing emphasis on the effort to which the man went to prepare his foundation.

4 tn Here δέ (de) has not been translated.

5 sn The picture here is of a river overflowing its banks and causing flooding and chaos.

6 tn Here καί (kai) has been translated as “but” to indicate the contrast present in the context.

7 tc Most mss, especially later ones (A C D Θ Ψ Ë1,13 Ï latt), read “because he built [it] on the rock” rather than “because it had been well built” (Ì75vid א B L W Ξ 33 579 892 1241 2542 pc sa). The reading of the later mss seems to be a harmonization to Matt 7:25, rendering it most likely secondary.