Excerpt from Meyer's NT commentary on Ephesians 2:10
From For, if the converted man is God’s creature, then the moral activity of life, in which the specific nature of the new creation is to manifest itself, and without which he would not be God’s work and creation, must likewise proceed from God; consequently, when the moral creative act (the regeneration) is accomplished, must already in God’s counsel and will be in such wise prepared and held ready for communication, that it has to receive the new creature from its Creator...Thus these good works following regeneration are as it were outflowings from a divine treasure beforehand placed in readiness, from which the regenerate man has received them, when he does them and walks in them.
From For, if the converted man is God’s creature, then the moral activity of life, in which the specific nature of the new creation is to manifest itself, and without which he would not be God’s work and creation, must likewise proceed from God; consequently, when the moral creative act (the regeneration) is accomplished, must already in God’s counsel and will be in such wise prepared and held ready for communication, that it has to receive the new creature from its Creator...Thus these good works following regeneration are as it were outflowings from a divine treasure beforehand placed in readiness, from which the regenerate man has received them, when he does them and walks in them.