About this we have much to say that is hard to explain, since you have become sluggish in hearing. For though by this time you ought to be teachers, you need someone to teach you again the basic elements of the oracles of God. You need milk, not solid food, for everyone who lives on milk, being still an infant, is unskilled in the word of righteousness. But solid food is for the mature, for those whose faculties have been trained by practice to distinguish good from evil.
If I get lax over anything, it won’t be long before I can tell the difference. That’s all too truly physically. It may be comfortable and feel perfectly fine to sit in my easy chair hour after hour, day after day. But when I get up, and especially when I have to do much at all I certainly realize that I’ve lost something. And the same is true spiritually. When I let up on reading Scripture and prayers, not to mention meeting as church, it doesn’t take long until I realize that my heart and mind are out of practice. What was more or less natural and rather taken for granted becomes a little less so, and if I would let it go longer, what had been natural will no longer feel that way, but more like drudgery or perhaps like climbing a mountain when one is out of shape. Hard to do.
When we’re in practice, at times it will feel like drudgery and often not feel easy. I speak from experience. But we need to keep doing it day after day, week after week, month after month, year after year. That in part is how spiritual growth will occur, yes how we’ll avoid eventually falling. Slacking off except perhaps for relatively brief intervals of rest is absolutely not an option for us who are Christ followers. We must continue on and keep going. God will help us, that we can be assured of, as we do this.