5:27 {7} Ye have heard that it was said by them of old time, Thou shalt not commit adultery:
(7) He is taken for an adulterer before God, whoever he is, that covets a woman: and therefore we must keep our eyes chaste, and all the members we have, yea and we must avoid all opportunities that might move us to evil, no matter what it costs us.
5:27,28 Thou shalt not commit adultery. The Jewish rabbis held that a man was guiltless who did not commit the act. Christ, as he always did, lays the laws upon the heart. If it is impure, full of unholy desires, one is guilty. It is our duty to keep the heart pure.
5:27 Thou shalt not commit adultery - And this, as well as the sixth commandment, the scribes and Pharisees interpreted barely of the outward act. Exod 20:14.
5:27-32 Victory over the desires of the heart, must be attended with painful exertions. But it must be done. Every thing is bestowed to save us from our sins, not in them. All our senses and powers must be kept from those things which lead to transgression. Those who lead others into temptation to sin, by dress or in other ways, or leave them in it, or expose them to it, make themselves guilty of their sin, and will be accountable for it. If painful operations are submitted to, that our lives may be saved, what ought our minds to shrink from, when the salvation of our souls is concerned? There is tender mercy under all the Divine requirements, and the grace and consolations of the Spirit will enable us to attend to them.