John Wesley on Genesis 4:3

In process of time - At the end of days, either at the end of the year when they kept their feast of in - gathering, or at the end of the days of the week, the seventh day; at some set time Cain and Abel brought to Adam, as the priest of the family, each of them an offering to the Lord; for which we have reason to think there was a divine appointment given to Adam, as a token of God's favour notwithstanding their apostacy.