5 Thou shalt yet plant vines upon the mountains of Samaria: the planters shall plant, and shall eat them as common things. 
5 Again you will plant vineyards on the hills of Samaria; the farmers will plant them and enjoy their fruit.
5 Again you shall plant vineyards on the mountains of Samaria; the planters shall plant and shall enjoy the fruit.
5 You'll go back to your old work of planting vineyards on the Samaritan hillsides, And sit back and enjoy the fruit - oh, how you'll enjoy those harvests!
5 You shall yet plant vines on the mountains of Samaria; The planters shall plant and eat them as ordinary food.
5 Again you will plant your vineyards on the mountains of Samaria and eat from your own gardens there.
Matthew Henry's Commentary on Jeremiah 31:5
Commentary on Jeremiah 31:1-9
(Read Jeremiah 31:1-9)
God assures his people that he will again take them into covenant relation to himself. When brought very low, and difficulties appear, it is good to remember that it has been so with the church formerly. But it is hard under present frowns to take comfort from former smiles; yet it is the happiness of those who, through grace, are interested in the love of God, that it is an everlasting love, from everlasting in the counsels, to everlasting in the continuance. Those whom God loves with this love, he will draw to himself, by the influences of his Spirit upon their souls. When praising God for what he has done, we must call upon him for the favours his church needs and expects. When the Lord calls, we must not plead that we cannot come; for he that calls us, will help us, will strengthen us. The goodness of God shall lead them to repentance. And they shall weep for sin with more bitterness, and more tenderness, when delivered out of their captivity, than when groaning under it. If we take God for our Father, and join the church of the first-born, we shall want nothing that is good for us. These predictions doubtless refer also to a future gathering of the Israelites from all quarters of the globe. And they figuratively describe the conversion of sinners to Christ, and the plain and safe way in which they are led.