American Standard Version
He that overcometh, I will give to him to sit down with me in my throne, as I also overcame, and sat down with my Father in his throne.

Berean Study Bible
To the one who overcomes, I will grant the right to sit with Me on My throne, just as I overcame and sat down with My Father on His throne.

Douay-Rheims Bible
To him that shall overcome, I will give to sit with me in my throne: as I also have overcome, and am set down with my Father in his throne.

English Revised Version
He that overcometh, I will give to him to sit down with me in my throne, as I also overcame, and sat down with my Father in his throne.

King James Bible
To him that overcometh will I grant to sit with me in my throne, even as I also overcame, and am set down with my Father in his throne.

World English Bible
He who overcomes, I will give to him to sit down with me on my throne, as I also overcame, and sat down with my Father on his throne.

Young's Literal Translation
He who is overcoming -- I will give to him to sit with me in my throne, as I also did overcome and did sit down with my Father in His throne.

Revelation 3:21 Additional Translations ...