Paul was occupied with the word, testifying to the Jews that the Christ was Jesus. (Acts 18:5b).
To be occupied with something is to pay attention to, apply oneself to or be engrossed with what one is occupied with. This means devotion and concentration. We live in a busy world, occupied with numerous things; some necessary, others unnecessary. Among all other things a believer may be occupied with, the word of God must be utmost. A believer whose life is not occupied with the word of God will need to reassess their priorities in life.
Consequently, a believer whose life is occupied with the word of God must also live a life pointing others to Christ. Every occupation with the word of God must point to the person of Christ and His redemptive work. Any occupation with the word of God which diverts attention from the work and person of Christ will lead to error.
Unfortunately, that is what prevails in modern day Christianity. Many use the word of God for reasons apart from testifying about Christ. This is in contrast with biblical apostolic ministry which was chiefly about testifying of Christ. He was the content of their message. And He must be ours too.
Just like Paul, the believer must be occupied with the word of God and testify about Christ. Wherever you are, make that your aim— to be occupied with the word of God and to testify about Christ:
I will meditate on your precepts and fix my eyes on your ways. I will delight in your statutes; I will not forget your word (Psalm 119:15-16).