1 Corinthians 16:9 in the World English Bible
for a great and effective door has opened to me, and there are many adversaries.
Context
8 But I will tarry at Ephesus until Pentecost.
9 For a great door and effectual is opened unto me, and there are many adversaries.
10 Now if Timotheus come, see that he may be with you without fear: for he worketh the work of the Lord, as I also do.