2. The Door that God Opens Will be Accompanied by Confirmation
In Matthew 18:15-16, Jesus laid out instructions for confronting sin among believers saying "But if they will not listen, take one or two others along, so that ‘every matter may be established by the testimony of two or three witnesses'." I believe the same applies when it comes to God confirming something in his Word. He will often confirm or establish a matter by "two or three witnesses" whether they be verses from the Word of God, advice from a pastor or well-respected person who is grounded in Scripture, or a non-compromising circumstance that continues to present itself. Through prayer, discernment and seeking godly counsel, you should be able to tell if that "open door" and its confirmations are truly coming from God.