If you have a peaceful spirit (peaceful nature), then God's Spirit can witness to your spirit...
Romans 8:16 "it is the Spirit himself bearing witness with our spirit that we are children of God".
"His spirit in the inner man".
Even when John the Baptist was preaching, people still used books, etc. for devotion in order to FORCE themselves to have a heavenly lifestyle (they took the kingdom by force)....
Matthew 11:12
"From the days of John the Baptist until now the kingdom of heaven has suffered violence, and men of violence take it by force".
.....but Jesus also left God's Spirit to teach us to have the attitude/character/nature that we should WANT to do what is right....
Ephesians 3:16
"his Spirit in the inner man".
...then we can have a clear conscience everyday.....
Hebrews 9:14
"purify your conscience".
The blood of Jesus only cleansed us from "sin" (violations of Mosaic law). Now there is no more "spiritual" sin, JESUS is THE final, genuine, and permanent (everlasting) cleansing.
Spiritually, there is NO SUCH THING as "sin" anymore (the word "sin" has no spiritual value/significance anymore, the word is now only SECULAR and REFERS to 'bad deed'/wrongdoing).
Hebrews 10:2
"If the worshipers had once been cleansed, they would no longer have any consciousness of sin".
The Jews did not have permanent and genuine cleansing (because Jesus hadn't come yet, their cleansing was temporary, it had to be repeated every year),...and it really did not have any soul-redeeming value), but we do have the true cleansing....(and it is FINAL/everlasting)....
Hebrews 10:4
"For it is impossible that the blood of bulls and goats should take away sins".
....so, as far as "sin", we are in the clear....PERIOD.
FOR US JESUS WORSHIPPERS, "sin" simply does not exist anymore.......(for all who don't claim/acknowledge Jesus as "savior", of course it does, but they're going to perish anyway).
So now that we need not ever be concerned again with such a thing as "sin", our devotion/worship should depend ONLY on having a deeper, stronger, closer, and more sincere RELATIONSHIP with God (being reconnected with Him intimately) so that OUR nature/spirit is compatible with HIS SPIRIT (a "MATURE" relationship).
The doctrine/teaching about Jesus ("doctrine of Christ"/gospel) has been DONE/FINALIZED/ACCOMPLISHED ("repentance" happened when we came to Christ), now we must move on to MATURITY (and have JESUS as our foundation instead of REPENTANCE as a foundation).
We sometimes might WANT to do things that are good and righteous (depending on our mood, God does not want us to be a hypocrite or doormat), but we should not do good deeds AS PART OF DEVOTION.
.....OUR EFFORTS will not and CANNOT bring us closer to God!....neither should we give ANYBODY special treatment ("SHOW partiality") to ANYONE (including brethren in Christ).....as a means of devotion/worship....(be partial to close family/friend relations as to your preference, but not as devotion)......"For God is not so unjust....." (Hebrews 6:10).
James 2:1
"My brethren, show no partiality".
Since the doctrine of Christ ("Christ and Him crucified") has been DONE/accomplished, we must move on (go "ahead") to a "mature" devotion, not doing righteous deeds (these are done for a "repentance" foundation and are "DEAD works"), nor should our faith be simply believing that GOD EXISTS ("faith TOWARD God",.....we should now have a "faith for faith" (Romans 1:17) and believe that God is loving kind........He is a REWARDER, not a punisher,....(don't resent/fear His reproach, let Him teach you the error of YOUR WAY whenever HE has decided it's necessary).
2 John 1:9
"Any one who goes ahead and does not abide in the doctrine of Christ does not have God; he who abides in the doctrine has both the Father and the Son".
....we must still "abide" in it, but not BASE our DEVOTION/WORSHIP on it (limiting our worship relationship).
A mature devotion depends on having a pure heart that can truly FEEL sorrow (the precursor of LOVE.....God is LOVE) instead of a "heart of stone" (the flesh is not innately evil, it's just the human/mortal WEAKNESS).
Ezekiel 11:19
"And I will give them one heart, and put a new spirit within them; I will take the stony heart out of their flesh and give them a heart of flesh".
....and with this heart of flesh that can feel the SENTIMENT of sorrow (a person can have many 'EMOTIONS') "living water" will flow from your heart....(like the woman that wiped Jesus's feet with HER living water, Luke 7:44)
John 7:38
"He who believes in me, as the scripture has said, 'Out of his heart shall flow rivers of living water"'.
.....this is the water that the Holy Spirit uses to baptize/consecrate the INNER TEMPLE to the OUTER TEMPLE THIS is the REAL "water baptism" (John 2:21, 1 Corinthians 3:16, 6:19),....MAN does not and cannot do it.....the ONLY baptism ("one lord, one faith, one baptism", Ephesians 4:5).
...so that we "neither thirst" (Revelation 7:16).
...."Therefore let us leave the elementary doctrine of Christ and go on to maturity, not laying again a foundation of repentance from dead works and of faith toward God" (Hebrews 6:1).
......and this we MUST do in order to be a SON OF GOD instead of only a "saint" that has salvation (you do want to experience the "BETTER THINGS that belong to salvation", don't you?).
So, know God as "Abba Father" (NOT "MASTER") so that you can be a SON of His......
Romans 8:15
"For you did not receive the spirit of slavery to fall back into fear, but you have received the spirit of sonship. When we cry, "Abba! Father!".
There is much more to the "depths of God" (1 Corinthians 2:10), but the "solid food" that is for the "mature" will enable you to receive the "anointing" (Hebrews 5:14 and 2 John 1:9).
My verses are from the RSV (the Revised Standard Version is the most accurate and explanatory version). Since you may not have one, I'll show the blueletterbible link.
We must WALK/journey with Jesus on a STREET.
...and for the "saints" who are simply satisfied with salvation alone, the Spirit does not agree with the BLOOD ONLY, but the "spirit AND the blood"
http://www.blueletterbible.org/search/translationResults.cfm?Criteria=these three agree&t=RSV&sf=5
Acts 9:11 ""Rise and go to the street called Straight" (the JEWS were to aim for the "strait GATE").
All verses are from the RSV.