I have known some good men who have been so addicted to their study, that they have thought the last day of the week sufficient to prepare for their ministry, though they employ all the rest of the week in other studies. But your business is to trade with your spiritual abilities. ... A man may preach a very good sermon, who is otherwise himself; but he will never make a good minister of Jesus Christ, whose mind and heart are not always in the work. Spiritual gifts will require continual ruminating on the things of the Gospel in our minds.
John OwenNo heart can conceive that treasury of mercies which lies in this one privilege, in having liberty and ability to approach unto God at all times, according to his mind and will.
John OwenBelievers obey Christ as the one whom our obedience is accepted by God. Believers know all their duties are weak, imperfect, and unable to abide in God's presence. Therefore they look to Christ as the one who bears the iniquity of their holy things, who adds incense to their prayers, gathers out all the weeds from their duties and makes them acceptable to God.
John Owen