Isaías 58
Isaac of Nineveh
Isaías 58:3
Ye offer [your own wills] as whole burnt offerings unto idols; and unto the wretched thoughts, that ye reckon in yourselves as gods, ye daily sacrifice your free will, a thing more precious than all incense, which ye ought rather to consecrate unto Me by your good works and your purity of conscience. — ASCETICAL HOMILIES 6
Isaías 58:9
Whenever you keep the ways of the Lord and do His will, then put your hope in the Lord and call on Him.…When temptation overtakes the iniquitous person, he has no confidence wherewith to call upon God, nor to expect salvation from Him, since in the days of his ease he stood aloof from God's will. — ASCETICAL HOMILIES 5