God has clearly said …

“God has clearly said, “Be holy, because I am holy.”
Surely He has not commanded us to be holy without providing the means to be holy. The privilege of being holy is yours, and the decision and responsibility to be holy is yours. If you make that decision, you will experience the fullness of joy which Christ has promised to those who walk in obedience to Him.”
– from p.158 of “The Pursuit of Holiness” by Jerry Bridges.