Isaiah 30:21, as translated from the Masoretic text (Hebrew), has been used times to say that God can show us where we need to go.
וְאָזְנֶ֙יךָ֙ תִּשְׁמַ֣עְנָה דָבָ֔ר מֵֽאַחֲרֶ֖יךָ לֵאמֹ֑ר זֶ֤ה הַדֶּ֙רֶךְ֙ לְכ֣וּ בֹ֔ו כִּ֥י תַאֲמִ֖ינוּ וְכִ֥י תַשְׂמְאִֽילוּ׃
And thine ears shall hear a word behind thee, saying, This is the way, walk ye in it, when ye turn to the right hand, and when ye turn to the left.
The Septuagint (Greek) version, however, means that the voice is coming from someone, not God, misleading you.
καὶ τὰ ὦτά σου ἀκούσονται τοὺς λόγους τῶν ὀπίσω σε πλανησάντων οἱ λέγοντες αὕτη ἡ ὁδός πορευθῶμεν ἐν αὐτῇ εἴτε δεξιὰ εἴτε ἀριστερά
and thine ears shall hear the words of them that went after thee to lead thee astray, who say, This [is] the way, let us walk in it, whether to the right or to the left.
What is the cause of this difference?