Joshua 3:8

And thou shalt command the priests that bear the ark of the covenant, saying, When ye are come to the brink of the water of Jordan, ye shall stand still in Jordan.

Cross-reference

Joshua 3:3 instructs the people to follow the ark; this verse gives the priests' specific command to stand still — both are sequential crossing instructions.

Joshua 3:17 shows the priests obeying the command — they stand in the Jordan as instructed, fulfilling verse 8.

Joshua 4:11 records the priests crossing after the people — the fulfillment of the command to stand in the Jordan in Joshua 3:8.

Exodus 14:13 has Moses telling Israel to stand still at the Red Sea — a parallel miracle water crossing where standing still precedes salvation.