King James Bible
Continue in prayer, and watch in the same with thanksgiving;

New King James Version
Continue earnestly in prayer, being vigilant in it with thanksgiving;

American Standard Version
Continue stedfastly in prayer, watching therein with thanksgiving;

Berean Study Bible
Devote yourselves to prayer, being watchful and thankful,

Douay-Rheims Bible
Be instant in prayer; watching in it with thanksgiving:

English Revised Version
Continue stedfastly in prayer, watching therein with thanksgiving;

World English Bible
Continue steadfastly in prayer, watching therein with thanksgiving;

Young's Literal Translation
In the prayer continue ye, watching in it in thanksgiving;

Colossians 4:2 Additional Translations ...