Hebrews 11:8
8By faith Abraham, when he was called, obeyed to go out to the place which he was to receive for an inheritance. He went out, not knowing where he went.
Wesley points to Genesis 12: Abraham obeyed when called and went out not knowing whither. Faith answers God’s call with going, before the map is clear.
Arminian interpreters hear a sincere call that Abraham obeyed—model for hearers who must likewise trust and go. Not knowing where is not irrationalism; it is trust in the Caller.
Calvin: faith caused him immediately to obey; through the same faith he went on without wavering to the end. Promptness and perseverance proved his faith. One of faith’s chief things is not to move a step except God’s word shows the way.
The call is God’s oracle; obedience is faith’s fruit. He embraced the promise and hastened as though sent to take possession—yet without knowing the place, that faith might be exercised.