And we know that all things work together for good to them that love God, to them who are the called according to his purpose.
In Egypt God commanded Israelites to take the blood of the lamb and apply it on their doorposts and lintels. When they did it, they were protected and spirit of death couldn't touch them. It was not the blood of an animal that protected them, but the faith and obedience. The blood was later used in the Tabernacle and it's clear it represents the blood of Jesus Christ. So it's important to understand what blood is. Blood is not just that red fluid, but as it is written "For the life of the flesh is in the blood". Jesus was a man, but He was also Son of God. When He poured out His own blood, the life that was within Him was released to our realm. So when we use the Blood of Jesus, we use His life, His lite, His energy. That is what spirits really see. We cover ourselves with it, we use it as weapon against unclean spirits, the same blood saves us etc.
And now to the point. Today, we do not kill sheep to get blood and use it for sprinkling. That's why we use oil that represents Holy Spirit that carry that Blood of Jesus. It does not matter what kind of oil we use, because it's not an oil that does the job, but it is our faith followed by action! We just use those spiritual principles by faith, but the faith has to have works (James 2). That's why God gave us anointing by oil, to put our faith in operation.
I wrote it as an answer to one comment, I believe it can bless somebody else to understand those basic principals. It is not my wisdom, it is an understanding I got from others and also through experiences. Questions are always welcome.
God bless you all
brother Tomas, March 2021