You are hair splitting.
Obedience is not necessary for receiving that gift. That is earning it.
Faith is necessary for receiving the gift then one is enabled to obey and produces works in keeping with repentance.
I gave an example from the Bible of Naaman. God offered him a free gift of healing yet that free gift came with the condition of dipping 7 times in the Jordan river.
—Naaman did NOT FIRST receive the free gift THEN obey
—he would NEVER received the free gift as long as he disobeyed
—when Naaman did obey by dipping, it is NOT said his obedience earned the free gift therefore taking away the freeness of the gift
I can give you other examples from the Bible as Naaman (as I did with Jn 6:27) showing God’s gives free gifts WITH conditions and the condition must FIRST be met BEFORE receiving the free gift and NOT ONE TIME is it said the obedience in meeting the condition earned the free gift.
Those that follow Luther and his teachings can try and deny the fact free gifts come with conditions but cannot ever make this reality go away.