Deuteronomy 1:33

who went before you See on Deuteronomy 1:30, and cp. Exodus 13:21.

to seek you out a place The same verb, tûr, which P uses for exploring; see on Deuteronomy 1:22. This is the only instance of its use in D. Some, therefore, take the verse as a later gloss, which but repeats what is described in Deuteronomy 1:30 f. (yet repetition is a mark of D's style), while the rest of the verse consists of variations of JE, Exodus 13:21; Numbers 14:14. For P's additions to the close of this episode see above.

fire by night … cloud by day See on Exodus 13:21.