Esias 8:18

18 Behold I and the children which God has given me: and they shall be signs and wonders in the house of Israel from the Lord of hosts, who dwells in mount Sion.

Esias 8:18 In-Context

16 Then shall those who seal themselves that they may not learn the law be made manifest.
17 And shall say, I will wait for God, who has turned away his face from the house of Jacob, and I will trust in him.
18 Behold I and the children which God has given me: and they shall be signs and wonders in the house of Israel from the Lord of hosts, who dwells in mount Sion.
19 And if they should say to you, Seek those who have in them a divining spirit, and them that speak out of the earth, them that speak vain words, who speak out of their belly: shall not a nation diligently seek to their God? why do they seek to the dead concerning the living?
20 For he has given the law for a help, that they should not speak according to this word, concerning which there are no gifts to give for it.

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