God calls people into different works. In the midst of this diversity, a common thread unites all the work—men ought to do all they do to the glory of God.
Men tend to fret over the motives behind others’ actions. Instead, men should trust the Lord to deal with the motives at the judgment seat of Christ.
How would making your motive match the Lord's motive change how you approach the Christian life (from witnessing to praying to Bible reading and so on)?
Many things have changed since Old Testament times. For instance, the Lord visited His people in the temple or tabernacle in the Old Testament by dwelling between the cherubims on the ark of God (Psalm 80:1). This ended especially with the onset of the New Testament and the permanent indwelling of God's Spirit within believers. The Lord stressed, “. . . that ye are the temple of God, and that the Spirit of God dwelleth in you” (1 Corinthians 3:16). For this reason, the New Testament does not place as much emphasis on reverence in the physical house of God. Regardless, the Lord is not silent concerning our behaviour in His house. We should behave ourselves both respectfully and properly (1 Timothy 3:15). Of all people, Bible believers should demonstrate reverence in the house of God so that others get a sense for our awe of God and His goodness.