Read James 1:12-15
When temptations to do evil come into our lives, let us never think that they have come from God; instead, God is doing what He can to prevent us from falling into sin. However, our flesh is so weak that we disregard Him occasionally and follow evil.
James said, "Every man is tempted, when he is drawn away of his own lust, and enticed" (James 1:14). Notice especially the words "and enticed." Lust comes from the enemy within--the old nature; enticement comes from the Enemy without--the Devil.
James 1:15 not only tells us more about the source of sin but also its final result: "When lust hath conceived, it bringeth forth sin: and sin, when it is finished, bringeth forth death."
James personified lust and sin here and spoke of conception, birth and death.
Lust is personified as a harlot who conceives and then bears a child called "sin," whose father is the Devil. Then sin also conceives and brings forth a grandchild, who is known as "death."
When a sinful desire enters the mind, it will grow in the mind until the deed is executed if it is not checked at once. As a rule, the mind eventually acts out what it dwells on.
"Be not overcome of evil, but overcome evil with good" (Rom. 12:21).