James 1:3

Knowing this, that the trying of your faith worketh patience.
— James 1:3, King James Version

In other translations

World English Bible (WEB)

Knowing that the testing of your faith produces patience.

American Standard Version (ASV)

knowing that the proving of your faith worketh patience.

Young's Literal Translation (YLT)

knowing that the proof of your faith doth work endurance,