The book of James is filled with practical advice for the Christian. It was written to the tribes of Israel in diaspora and conveys practical applications of the faith for Christians today.
The opening sounds like an oxymoron. Consider it pure joy when you face trials. My first reaction is "Bah, humbug!" Who enjoys trials and persecutions and difficulties? Certainly not me!
But having been through a few of them, I can tell you that the presence of the Lord is nearest when you need him the most. When you are about to face the totally unthinkable, He will give you the exact knowledge you need precisely at the moment you need it.
The presence and nearness of the Lord will give you the strength to persevere through anything - absolutely anything - that the world and the enemy can throw at you.
When you need to know what to do next, you simply ask Him. He will tell you the next step to take. But there is a stipulation here. You need to be so familiar with His voice and His thoughts that the enemy cannot lead you astray. Those who spend time in His word will know His voice. To them it will be almost as audible as if He were speaking aloud an entire room full of people.
At times when I have been driving in the car and mulling over something that needed handling, His voice has been as audible as if He were in the seat beside me, speaking directly into my ear. Actually, for the Christian, He dwells within your heart and speaks directly to your spirit.
Our job is to be so familiar with His voice that no one can counterfeit it. Consider it all joy that you know His voice at all times and in all circumstances.
Draw us ever closer to You. Teach us the nuances of Your voice so that we may ever be obedient to Your word and always edified by Your presence.
In Jesus' most precious name.