I've noticed something awkward that can happen when someone is leading devotions and a Steve Lennox or Bud Bence is in the room. Frankly, it happens a lot when a pastor is in the room. The person leading the devotions can be uncomfortable to share out of fear that they'll get some interpretation wrong.
Here's the big secret. God does not primarily speak through Scripture by way of the "expert" meaning, I don't think. Rather, the Spirit can trigger wisdom and spiritual insight through the text whether it has anything to do with what the text meant originally or not. Like I said the other day, there are experts on the Bible and it takes years of intense study to truly become one. But you don't have to be an expert for God to speak to you through Scripture. Otherwise we'd all be sunk.
I heard a devotional the other day. It was a great devotional that urged us on to healthy lives that took time for God and for rest in our lives. The author of the biblical text in question might not have recognized much of anything in the devotional. But it doesn't matter because God used the devotional to speak truth to us that fit with the big truths of Scripture.
I venture to say that the majority of stuff preached from the pulpits of the world every Sunday goes well beyond anything the sermon texts and their authors ever imagined. Some of it is probably way off in one respect... and yet way true in another. That's the way the Spirit works, I think, more often than not. Half the time we think we're getting a truth from the Bible we're actually getting a truth from the Spirit, triggered through the words of the Bible. It's a dance we do with the Spirit and the text.
By the way, I would even put a lot of the insights of a Dennis Kinlaw in this category. Sure, he knows Hebrew. He knows the history of interpretation of the Old Testament. He knows the history of the ancient near east like nobody's business. But his preaching insights? I don't actually think Moses or David or Isaiah would recognize half of it. But the Spirit has given Kinlaw massive spiritual insight and wisdom in his lifelong dancing with the biblical texts.
So boldly lead your devotionals from the Bible without worrying about whether your wisdom is exactly what the text meant originally. Boldly preach that sermon God has laid on your heart whether you know Greek or not. Wisdom and insight is not limited to the original meaning. Frankly, the experts often disagree on what the original meaning was in the first place.
If you have the Spirit of Christ--and thus read the Bible with the eyes of faith, hope, and love--the Spirit will steer you and your community of faith in the right direction.