Where to find scriptural help, to think in a pure way:
Finally, brothers, whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable—if anything is excellent or praiseworthy—think about such things. Whatever you have learned or received or heard from me, or seen in me—put it into practice. And the God of peace will be with you.
Almighty God, who has given Your only Son to be both a sacrifice for sin and an example of godly living, give me grace that I may always most thankfully receive this immense benefit and also daily endeavor to follow the blessed steps of His most holy life, through the same Jesus Christ, Your Son, our Lord,
Where to find scriptural help, regarding purity:
Matthew 5: 27-32
You have heard that it was said, ‘Do not commit adultery.’ But I tell you that anyone who looks at a women lustfully has already committed adultery with her in his heart. If your right eye causes you to sin, gouge it out and throw it away. It is better for you to lose one part of your body than for your whole body to be thrown into hell. And if your right hand causes you to sin, cut it off and throw it away. It is better for you to lose one part of your body than for your whole body to go into hell.
Almighty God, whose strength is made perfect in weakness, mortify and kill all vices in me and strengthen me by Your grace that by the innocence of my life and the strengthening of my faith, even unto death, I may glorify Your holy name, through Jesus Christ, Your Son, our Lord,