Psalm 51:4 Against thee, thee only, have I sinned, and done this evil in thy sight: that thou mightest be justified when thou speakest, and be clear when thou judgest.
KJV
Does this verse sound a little awkward to your inner being? You have sinned against so many people on Earth. How can the Psalmist - inspired by God - be confident while writing down that he has sinned against God and God alone?
Well, he sure must have been if he would have meditated on these words from God. Each of us, made in God's image, commits sins that become a reflection of the sin we commit against God's commandment to love one another and to do unto others what you would have them do unto you. What a blessed soul that trusts in the judgement of His Creator.