Esias 7:15

15 Butter and honey shall he eat, before he knows either to prefer evil choose the good.

Esias 7:15 In-Context

13 And he said, Hear ye now, O house of David; is it a little thing for you to contend with men? and how do ye contend against the Lord?
14 Therefore the Lord himself shall give you a sign; behold, a virgin shall conceive in the womb, and shall bring forth a son, and thou shalt call his name Emmanuel.
15 Butter and honey shall he eat, before he knows either to prefer evil choose the good.
16 For before the child shall know good or evil, he refuses evil, to choose the good; and the land shall be forsaken which thou art afraid of because of the two kings.
17 But God shall bring upon thee, and upon thy people, and upon the house of thy father, days which have never come, from the day that Ephraim took away from Juda the king of the Assyrians.

The Brenton translation of the Septuagint is in the public domain.