I was reminded this morning from the sermon on Genesis 4 – 5 about sin. So far in the narrative, people have the choice not to sin but still they yield to it (Adam, Eve, Cain, Lamech). In the case of Cain, God even reminded him personally in Genesis 4:6

⁶ Then the LORD said to Cain, "Why are you angry? Why is your face downcast? ⁷ If you do what is right, will you not be accepted? But if you do not do what is right, sin is crouching at your door; it desires to have you, but you must master it.

Genesis 4:6 – New International Version (NIV)

This still rings true even for Christians, sins still surround us just like a tiger waiting to attack at every opportunity, things like: pride, lust, pornography, envy, slander, lies. And yet, God through hIs word still call us Christians to stand firm and not fall into sin. 

Thank God for Jesus, the seed of Adam that have been tempted yet is without sin, He had crushed the serpent that whoever believe in Him can share in His victory.