King James Version
Therefore, behold, I will this once cause them to know, I will cause them to know mine hand and my might; and they shall know that my name is The LORD.English Standard Version
"Therefore, behold, I will make them know, this once I will make them know my power and my might, and they shall know that my name is the LORD."New International Version
"Therefore I will teach them- this time I will teach them my power and might. Then they will know that my name is the LORD.