From the snapshot of your experience, it would appear that they didn't tell you anything contrary to the 'personal relationship'. Your pastor in college sounds like a fine man. I'm guessing when he said miracles 'and such' were confined to the apostolic church he didn't restrain the Holy Spirit from performing them. The Word and Sacraments provide what a Christian needs to do what God commands, and likewise provides forgiveness when a Christian repents after failing to do what God commands. As I said before, the Great Commission doesn't have an expiration date on it, it remains in effect till Our Lord comes again. Are you about doing it or are you engaged in navel gazing over things beyond your control which are the province of God? He is handling His work, isn't it about time you got to the work assigned to you and all other Christians?
Miracles, signs and wonders, didn't not Jesus talk of these? Some would not believe even if a man rose from the dead. You believe Jesus rose from the dead, do still need further proof?
As to your experience, have you read the confessional documents? The catechism? If so, you wouldn't need to be told about a personal relationship, cuz it's in there. Just as it is in Scripture. You applaud Luther rightly for the Grace and Faith 'revelation' from Romans as a right exposition of the Apostles words. Read the rest of Romans after praying to the Holy Spirit to guide you.
I guess I am maybe navel gazing but it is fun! It is my witness to how awesome Our Lord Jesus Christ is. IMHO Talking about Our Lord Jesus Christ on FR is part of the Great Commission. We may be nearing an end to the church building time and church budgets.