New Living Translation
If you refuse, watch out! For tomorrow I will bring a swarm of locusts on your country.

American Standard Version
Else, if thou refuse to let my people go, behold, to-morrow will I bring locusts into thy border:

Berean Study Bible
But if you refuse to let My people go, I will bring locusts into your territory tomorrow.

Douay-Rheims Bible
But if thou resist, and wilt not let them go, behold I will bring in to morrow the locust into thy coasts:

English Revised Version
Else, if thou refuse to let my people go, behold, tomorrow will I bring locusts into thy border:

King James Bible
Else, if thou refuse to let my people go, behold, to morrow will I bring the locusts into thy coast:

World English Bible
Or else, if you refuse to let my people go, behold, tomorrow I will bring locusts into your country,

Young's Literal Translation
for if thou art refusing to send My people away, lo, I am bringing in to-morrow the locust into thy border,

Exodus 10:4 Additional Translations ...