New Living Translation
That’s why I work and struggle so hard, depending on Christ’s mighty power that works within me.

American Standard Version
whereunto I labor also, striving according to his working, which worketh in me mightily.

Berean Study Bible
To this end I also labor, striving with all His energy working powerfully within me.

Douay-Rheims Bible
Wherein also I labour, striving according to his working which he worketh in me in power.

English Revised Version
whereunto I labour also, striving according to his working, which worketh in me mightily.

King James Bible
Whereunto I also labour, striving according to his working, which worketh in me mightily.

World English Bible
for which I also labor, striving according to his working, which works in me mightily.

Young's Literal Translation
for which also I labour, striving according to his working that is working in me in power.

Colossians 1:29 Additional Translations ...