Holy
“You are My witnesses,” says the Lord, “And My servant whom I have chosen, that you may know and believe Me, and understand that I am He. Before Me there was no God formed, nor shall there be after Me. I, even I, am the Lord, and besides Me there is no savior. I have declared and saved, I have proclaimed, and there was no foreign god among you; therefore you are My witnesses,” says the Lord, “that I am God. Indeed before the day was, I am He; and there is no one who can deliver out of My hand; I work, and who will reverse it?” Isaiah 43:10-13
Keep holy the things that are holy.
Keeping things holy doesn't happen naturally, if you don’t make an effort to keep something holy, it will quickly become commonplace. God is holy, and, as His servant whom He has chosen, you are to spread His holiness to the world around you. You are to declare that there is no savior apart from God and that no one else can deliver out of His hand. You can only become the witness of His holiness if you share and spread His holiness. An integral part of His holiness is that there is no other God than the Lord.
God is neither a vending machine nor a slave driver.
God is a relationship and He is holy. Because God is completely holy,everything He gives is holy, but all He does is only a glimmer of His holiness. To keep God's holiness pure, you have to focus on Him rather than anything that comes from Him. He gives grace to the humble, to those who can't afford to buy anything from God's vending machine (everyone). He also demands more holiness from us than the Scribes and Pharisees had. But He pays for us to receive from His vending machine and gives us the holiness we could never attain on our own.
Do more than is expected of you.
When volunteering to do more than is required, you turn a required task into a choice. You eliminate the drudgery of something by deciding to joyously do even more than what is expected. Going beyond what is expected is another aspect of God's holiness. He created the universe, then goes beyond what is expected by creating mankind in His image. Mankind chooses to reject Him and again God goes beyond what is expected by redeeming mankind rather than starting over. Not only does He redeem mankind, but He sacrifices Himself to do it. He requires absolute holiness for anyone to be in His presence, and then He gives us His holiness to meet His requirement. God alone is completely holy and we become a witness of His holiness by allowing His holiness to be reflected in us.