Knowing this principle of vacuum operation, I believed (and still believe) it is best to vacuum all the carpet and not merely target obvious debris. I also observed people using an upright vacuum with an internal roll brush like one would use a lawn mower, walking behind it using a continuous forward pass rather than back and forth with overlapping strokes. It may be easier to quickly walk behind a heavy, upright vacuum as one would a lawn mower because the moving roll helps pull it forward. By virtue of the design, upright vacuums can agitate fibers and clean more effectively with a slower pull. If all one cares about is brush marks in the carpet, pushing it forward quickly achieves this result. But if your purpose and intent is to rid the carpet of hidden soils, it will require more time and overlapping passes.
It occurred to me today that we can approach God's word like we are vacuuming, searching for quick wisdom we can easily gather on the surface. We breeze through a chapter or pages like a person pushing a vacuum, focussed on speedily covering the carpet with brush marks to move on to the next task or activity--when God has given His word for other purposes altogether. God's word is living and powerful, intended to reveal the thoughts and intents of our hearts. In light of God's law we see the inner filth of our hearts revealed and our need for God's cleansing and renewal; we are shocked by the unbelief, pride and selfishness that lies hidden within. The Holy Spirit convicts us of sin, righteousness and judgment, and God's word guides us to judge ourselves lest we be condemned.
God intends His word to have a cleansing effect upon our minds, hearts and conduct as Paul wrote in
Ephesians 5:25-27: "Husbands, love your wives, just as Christ also loved the church
and gave Himself for her, 26 that He
might sanctify and cleanse her with the washing of water by the word, 27 that He might present her to
Himself a glorious church, not having spot or wrinkle or any such thing, but
that she should be holy and without blemish." We are called to embrace our sanctification Jesus Christ does through the "washing of water by the word" so the whole church might be presented to him "holy and without blemish." Getting wet is not the same as washing. Effective washing often involves clean water with pressure, detergent, friction, agitation and rinsing. Whatever requires cleansing once will need washing again--like cars, clothes or bodies after exercise, working in the yard, or international travel.
There are likely people who wash their clothes, bodies and faces more often than being "washed in the water of the word" because it deals with spiritual matters of the heart that are not so easily seen--though the conditions of our hearts can be evidenced by what we think, say and do. Let us not be as little children that cannot see the point of bathing because we recently washed, without comprehension of our need for cleansing. Be in the word, Christian, knowing the way we approach the scripture makes a difference. Let us read believing with a heart to obey, and submit ourselves to the cleansing flow of God's word in our inmost being. Only the LORD can create in us a clean heart and renew a right spirit in us, and His word is an indispensable part of the process.