Adam Clarke on Exodus 14:13

Moses said - Fear ye not - This exhortation was not given to excite them to resist, for of that there was no hope; they were unarmed, they had no courage, and their minds were deplorably degraded.

Stand still - Ye shall not be even workers together with God; only be quiet, and do not render yourselves wretched by your fears and your confusion.

See the salvation of the Lord - Behold the deliverance which God will work, independently of all human help and means.

Ye shall see them again no more - Here was strong faith, but this was accompanied by the spirit of prophecy. God showed Moses what he would do, he believed, and therefore he spoke in the encouraging manner related above.