Actually there is one.
Galatians 5:17 For the flesh lusteth against the Spirit, and the Spirit against the flesh: and these are contrary the one to the other: so that ye cannot do the things that ye would.
However "rhythm" is not condemned in the Scripture.
There are natural rhythms everywhere in creation and the universe as mentioned above.
Start with the lunar cycle, the annual cycle.
The flight of birds and insects depends upon the cycle of the flapping of their wings.
Pulsar stars.
etc, etc...
All of God's creation is "very good".
My personal opinion is that our evil hearts and minds supply the darkness that makes the essence of sin.
Jeremiah 17:9 The heart is deceitful above all things, and desperately wicked: who can know it?
Until we are made clean by the blood of Christ.
Titus 1:15 Unto the pure all things are pure: but unto them that are defiled and unbelieving is nothing pure; but even their mind and conscience is defiled.
HankD