R. Albert Mohler Jr., Hebrews

“There are only two options in the Christian life: we can either sail forward in fidelity or we can drift backward in faithlessness. There is no such thing as standing still in the Christian life.” 

 “The danger of spiritual drift is not only that we might miss out on a spiritually flourishing life; the true danger of spiritual drift is that we abandon the gospel itself and find ourselves under the judgment of God.”

“... fight against the danger of spiritual drift: we must pay attention to and obey the Word of God.”

from Christ-Centered Exposition Commentary, Exalting Jesus in Hebrews