Albert Barnes Commentary Job 33:29

"Lo, all these things doth God work, Twice, [yea] thrice, with a man," — Job 33:29 (ASV)

Look, all these things God works—that is, he takes all these methods to warn people and to reclaim them from their evil ways.

Oftentimes—Hebrew as in the margin, "twice, thrice." This phrase can be understood in two ways. Our translators take it to mean an indefinite number, implying that God frequently takes occasion to warn people and repeats the admonition when they disregard it. Alternatively, and more probably, Elihu refers here to the particular methods he had specified, which were three in number:

1. Warnings in the visions of the night (Job 33:14–17).
2. Afflictions (Job 33:19–22).
3. The messenger whom God sent to make the sufferer aware of the purpose of the affliction and to assure him that he might return to God (Job 33:23–26).

The Septuagint understands it this way, translating it as ὁδοὺς τρεῖς hodous treis—three ways, referring to the three methods Elihu had specified.