House of God—the Church
Timothy was exhorted as to how to behave himself in the house of God, which is the pillar and ground of the truth. Instruction as to how to behave ourselves in the Church of God does not mean in a building. I do not, of course, advocate any unbecoming attitude when entering a meeting room, but here it is the scope of the Church of God composed of all believers. God has such a house on earth, and we should be careful of our deportment all through the week as being part of that house. So each believer should desire to remember the Lord at His Table on the first day of the week. I would not encourage you to do so if you are going on with something inconsistent with your testimony as a Christian. That should first be judged.
Who are the "sons of the prophets" in verse five who meet and talk with Elisha, asking him if he knows that Elijah will be taken from him? Typically they are like Christians who are so mixed up with the world, that there is no positive testimony for the Lord; they are just bread-breakers, that is all. We never see them at any other meeting. How it grieves us to hear them speak of the Lord's coming; their whole life is a denial of the reality of His return. So Elisha says, "Yea, I know it; hold ye your peace.”
