All sins affect others and hurt others.

Let us obey the precepts of God, even for the sake of others.

Have you walked on the streets, and come across a muddy puddle, and step in it? What happens to the people next to you if you are not careful to avoid the puddle or somehow gently mindfully cross over?

Isaiah 57:20 KJV “But the wicked are like the troubled sea, when it cannot rest, whose waters cast up mire and dirt.”

Have you been around people who are tended to be negative, complaining, exhibiting the opposite of Christ's character, and been affected by it? Don't we all like to be around happy joyful company?

Psalm 38:5-8 KJV 5 My wounds stink and are corrupt because of my foolishness. 6 I am troubled; I am bowed down greatly; I go mourning all the day long. 7 For my loins are filled with a loathsome disease: and there is no soundness in my flesh. 8 I am feeble and sore broken: I have roared by reason of the disquietness of my heart.

If our righteous prayers (lifted in utmost humility and love) can be so powerful, would not our unbelief and non-prayers, or the wrong prayers said with selfish desire also be detrimental?

James 5:13-18 KJV 13 Is any among you afflicted? let him pray. Is any merry? let him sing psalms. 14 Is any sick among you? let him call for the elders of the church; and let them pray over him, anointing him with oil in the name of the Lord: 15 And the prayer of faith shall save the sick, and the Lord shall raise him up; and if he have committed sins, they shall be forgiven him. 16 Confess your faults one to another, and pray one for another, that ye may be healed. The effectual fervent prayer of a righteous man availeth much. 17 Elias was a man subject to like passions as we are, and he prayed earnestly that it might not rain: and it rained not on the earth by the space of three years and six months. 18 And he prayed again, and the heaven gave rain, and the earth brought forth her fruit.